3646540799 has 4 divisors (see below), whose sum is σ = 3978044520. Its totient is φ = 3315037080.

The previous prime is 3646540753. The next prime is 3646540813. The reversal of 3646540799 is 9970456463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3646540799 - 2²⁴ = 3629763583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3646540799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646540099) 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, 165751844 + ... + 165751865.

It is an arithmetic number, because the mean of its divisors is an integer number (994511130).

Almost surely, 2^3646540799 is an apocalyptic number.

3646540799 is a deficient number, since it is larger than the sum of its proper divisors (331503721).

3646540799 is a wasteful number, since it uses less digits than its factorization.

3646540799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331503720.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The square root of 3646540799 is about 60386.5945305744. The cubic root of 3646540799 is about 1539.1951716032.

It can be divided in two parts, 3646 and 540799, that added together give a palindrome (544445).

The spelling of 3646540799 in words is "three billion, six hundred forty-six million, five hundred forty thousand, seven hundred ninety-nine".