381612876 has 12 divisors (see below), whose sum is σ = 890430072. Its totient is φ = 127204288.

The previous prime is 381612863. The next prime is 381612877. The reversal of 381612876 is 678216183.

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

It is not an unprimeable number, because it can be changed into a prime (381612877) 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, 15900525 + ... + 15900548.

It is an arithmetic number, because the mean of its divisors is an integer number (74202506).

Almost surely, 2^381612876 is an apocalyptic number.

It is an amenable number.

381612876 is an abundant number, since it is smaller than the sum of its proper divisors (508817196).

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

381612876 is a wasteful number, since it uses less digits than its factorization.

381612876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31801080 (or 31801078 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 381612876 is about 19534.9142818698. The cubic root of 381612876 is about 725.3389622282.

The spelling of 381612876 in words is "three hundred eighty-one million, six hundred twelve thousand, eight hundred seventy-six".