3645623156 has 48 divisors (see below), whose sum is σ = 7412697600. Its totient is φ = 1536599808.

The previous prime is 3645623143. The next prime is 3645623161. The reversal of 3645623156 is 6513265463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413765 + ... + 422483.

It is an arithmetic number, because the mean of its divisors is an integer number (154431200).

Almost surely, 2^3645623156 is an apocalyptic number.

It is an amenable number.

3645623156 is an abundant number, since it is smaller than the sum of its proper divisors (3767074444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645623156 is a wasteful number, since it uses less digits than its factorization.

3645623156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8976 (or 8974 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 3645623156 is about 60378.9959837028. The cubic root of 3645623156 is about 1539.0660492150.

The spelling of 3645623156 in words is "three billion, six hundred forty-five million, six hundred twenty-three thousand, one hundred fifty-six".