3640252515 has 8 divisors (see below), whose sum is σ = 5824404048. Its totient is φ = 1941468000.

The previous prime is 3640252501. The next prime is 3640252519. The reversal of 3640252515 is 5152520463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3640252515 - 2⁹ = 3640252003 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 121341736 + ... + 121341765.

It is an arithmetic number, because the mean of its divisors is an integer number (728050506).

Almost surely, 2^3640252515 is an apocalyptic number.

3640252515 is a deficient number, since it is larger than the sum of its proper divisors (2184151533).

3640252515 is a wasteful number, since it uses less digits than its factorization.

3640252515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242683509.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 3640252515 is about 60334.5051773859. The cubic root of 3640252515 is about 1538.3099065591.

Adding to 3640252515 its reverse (5152520463), we get a palindrome (8792772978).

The spelling of 3640252515 in words is "three billion, six hundred forty million, two hundred fifty-two thousand, five hundred fifteen".