3645952349 has 4 divisors (see below), whose sum is σ = 3926410236. Its totient is φ = 3365494464.

The previous prime is 3645952339. The next prime is 3645952357. The reversal of 3645952349 is 9432595463.

It is a happy number.

3645952349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9432595463 = 31 ⋅304277273.

It can be written as a sum of positive squares in 2 ways, for example, as 625900324 + 3020052025 = 25018^2 + 54955^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645952349 - 2¹² = 3645948253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3645952297 and 3645952306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645952319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140228924 + ... + 140228949.

It is an arithmetic number, because the mean of its divisors is an integer number (981602559).

Almost surely, 2^3645952349 is an apocalyptic number.

It is an amenable number.

3645952349 is a deficient number, since it is larger than the sum of its proper divisors (280457887).

3645952349 is a wasteful number, since it uses less digits than its factorization.

3645952349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280457886.

The product of its digits is 3499200, while the sum is 50.

The square root of 3645952349 is about 60381.7219777641. The cubic root of 3645952349 is about 1539.1123727559.

The spelling of 3645952349 in words is "three billion, six hundred forty-five million, nine hundred fifty-two thousand, three hundred forty-nine".