387057531900 has 144 divisors (see below), whose sum is σ = 1228787540064. Its totient is φ = 93477995520.

The previous prime is 387057531899. The next prime is 387057531907. The reversal of 387057531900 is 9135750783.

It is a super-2 number, since 2×387057531900² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 387057531900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387057531907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 729579 + ... + 1142978.

It is an arithmetic number, because the mean of its divisors is an integer number (8533246806).

Almost surely, 2^387057531900 is an apocalyptic number.

387057531900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387057531900 is an abundant number, since it is smaller than the sum of its proper divisors (841730008164).

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

387057531900 is a wasteful number, since it uses less digits than its factorization.

387057531900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1872640 (or 1872633 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 48.

The spelling of 387057531900 in words is "three hundred eighty-seven billion, fifty-seven million, five hundred thirty-one thousand, nine hundred".