381597500 has 30 divisors (see below), whose sum is σ = 834482880. Its totient is φ = 152638000.

The previous prime is 381597451. The next prime is 381597511. The reversal of 381597500 is 5795183.

381597500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 73820 + ... + 78819.

It is an arithmetic number, because the mean of its divisors is an integer number (27816096).

Almost surely, 2^381597500 is an apocalyptic number.

It is an amenable number.

381597500 is an abundant number, since it is smaller than the sum of its proper divisors (452885380).

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

381597500 is a wasteful number, since it uses less digits than its factorization.

381597500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152663 (or 152646 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 381597500 is about 19534.5207261402. The cubic root of 381597500 is about 725.3292202773.

The spelling of 381597500 in words is "three hundred eighty-one million, five hundred ninety-seven thousand, five hundred".