3688920500 has 24 divisors (see below), whose sum is σ = 8056603464. Its totient is φ = 1475568000.

The previous prime is 3688920439. The next prime is 3688920533. The reversal of 3688920500 is 50298863.

It can be written as a sum of positive squares in 4 ways, for example, as 1151380624 + 2537539876 = 33932^2 + 50374^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688421 + ... + 3689420.

It is an arithmetic number, because the mean of its divisors is an integer number (335691811).

Almost surely, 2^3688920500 is an apocalyptic number.

It is an amenable number.

3688920500 is an abundant number, since it is smaller than the sum of its proper divisors (4367682964).

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

3688920500 is a wasteful number, since it uses less digits than its factorization.

3688920500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377860 (or 7377848 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 3688920500 is about 60736.4840931709. The cubic root of 3688920500 is about 1545.1350063387.

The spelling of 3688920500 in words is "three billion, six hundred eighty-eight million, nine hundred twenty thousand, five hundred".