3640252539 has 16 divisors (see below), whose sum is σ = 6051329280. Its totient is φ = 1891040160.

The previous prime is 3640252523. The next prime is 3640252543. The reversal of 3640252539 is 9352520463.

It is not a de Polignac number, because 3640252539 - 2⁴ = 3640252523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3640252497 and 3640252506.

It is not an unprimeable number, because it can be changed into a prime (3640252519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7879104 + ... + 7879565.

It is an arithmetic number, because the mean of its divisors is an integer number (378208080).

Almost surely, 2^3640252539 is an apocalyptic number.

3640252539 is a deficient number, since it is larger than the sum of its proper divisors (2411076741).

3640252539 is a wasteful number, since it uses less digits than its factorization.

3640252539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15758690.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 3640252539 is about 60334.5053762770. The cubic root of 3640252539 is about 1538.3099099397.

The spelling of 3640252539 in words is "three billion, six hundred forty million, two hundred fifty-two thousand, five hundred thirty-nine".