3638120700 has 72 divisors (see below), whose sum is σ = 11145505392. Its totient is φ = 913095680.

The previous prime is 3638120687. The next prime is 3638120701. The reversal of 3638120700 is 70218363.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3638120701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351579 + ... + 361778.

It is an arithmetic number, because the mean of its divisors is an integer number (154798686).

Almost surely, 2^3638120700 is an apocalyptic number.

3638120700 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3638120700 is an abundant number, since it is smaller than the sum of its proper divisors (7507384692).

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

3638120700 is a wasteful number, since it uses less digits than its factorization.

3638120700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713391 (or 713384 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 3638120700 is about 60316.8359581303. The cubic root of 3638120700 is about 1538.0095581180.

The spelling of 3638120700 in words is "three billion, six hundred thirty-eight million, one hundred twenty thousand, seven hundred".