3815640988 has 12 divisors (see below), whose sum is σ = 6679965040. Its totient is φ = 1907079552.

The previous prime is 3815640977. The next prime is 3815641001. The reversal of 3815640988 is 8890465183.

It is a super-2 number, since 2×3815640988² = 29118232298611232288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173568 + ... + 194311.

Almost surely, 2^3815640988 is an apocalyptic number.

It is an amenable number.

3815640988 is a deficient number, since it is larger than the sum of its proper divisors (2864324052).

3815640988 is a wasteful number, since it uses less digits than its factorization.

3815640988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370476 (or 370474 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 52.

The square root of 3815640988 is about 61770.8749169056. The cubic root of 3815640988 is about 1562.6288389376.

The spelling of 3815640988 in words is "three billion, eight hundred fifteen million, six hundred forty thousand, nine hundred eighty-eight".