3646516545 has 36 divisors (see below), whose sum is σ = 7352572500. Its totient is φ = 1666977984.

The previous prime is 3646516543. The next prime is 3646516553. The reversal of 3646516545 is 5456156463.

3646516545 = T₅₃₃₃ + T₅₃₃₄ + ... + T₅₅₇₇.

3646516545 is a `hidden beast` number, since 36 + 4 + 65 + 16 + 545 = 666.

3646516545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 951660801 + 2694855744 = 30849^2 + 51912^2 .

It is not a de Polignac number, because 3646516545 - 2¹ = 3646516543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3646516545.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646516543) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 824670 + ... + 829079.

It is an arithmetic number, because the mean of its divisors is an integer number (204238125).

Almost surely, 2^3646516545 is an apocalyptic number.

3646516545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3646516545 is an abundant number, since it is smaller than the sum of its proper divisors (3706055955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3646516545 is a wasteful number, since it uses less digits than its factorization.

3646516545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653774 (or 1653764 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The square root of 3646516545 is about 60386.3937075232. The cubic root of 3646516545 is about 1539.1917590793.

The spelling of 3646516545 in words is "three billion, six hundred forty-six million, five hundred sixteen thousand, five hundred forty-five".