381925788 has 12 divisors (see below), whose sum is σ = 891160200. Its totient is φ = 127308592.

The previous prime is 381925781. The next prime is 381925811. The reversal of 381925788 is 887529183.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 381925788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381925781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15913563 + ... + 15913586.

It is an arithmetic number, because the mean of its divisors is an integer number (74263350).

Almost surely, 2^381925788 is an apocalyptic number.

It is an amenable number.

381925788 is an abundant number, since it is smaller than the sum of its proper divisors (509234412).

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

381925788 is a wasteful number, since it uses less digits than its factorization.

381925788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31827156 (or 31827154 counting only the distinct ones).

The product of its digits is 967680, while the sum is 51.

The square root of 381925788 is about 19542.9216853571. The cubic root of 381925788 is about 725.5371606925.

The spelling of 381925788 in words is "three hundred eighty-one million, nine hundred twenty-five thousand, seven hundred eighty-eight".