3638728750 has 40 divisors (see below), whose sum is σ = 6840903960. Its totient is φ = 1451124000.

The previous prime is 3638728747. The next prime is 3638728801. The reversal of 3638728750 is 578278363.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3638728694 and 3638728703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 429556 + ... + 437944.

It is an arithmetic number, because the mean of its divisors is an integer number (171022599).

Almost surely, 2^3638728750 is an apocalyptic number.

3638728750 is a deficient number, since it is larger than the sum of its proper divisors (3202175210).

3638728750 is an equidigital number, since it uses as much as digits as its factorization.

3638728750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8758 (or 8743 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The square root of 3638728750 is about 60321.8762141895. The cubic root of 3638728750 is about 1538.0952373916.

The spelling of 3638728750 in words is "three billion, six hundred thirty-eight million, seven hundred twenty-eight thousand, seven hundred fifty".