381183172 has 12 divisors (see below), whose sum is σ = 667534336. Its totient is φ = 190459080.

The previous prime is 381183169. The next prime is 381183181. The reversal of 381183172 is 271381183.

It is a super-2 number, since 2×381183172² = 290601221231963168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26508 + ... + 38275.

Almost surely, 2^381183172 is an apocalyptic number.

It is an amenable number.

381183172 is a deficient number, since it is larger than the sum of its proper divisors (286351164).

381183172 is a wasteful number, since it uses less digits than its factorization.

381183172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66258 (or 66256 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 381183172 is about 19523.9128250461. The cubic root of 381183172 is about 725.0666110815.

The spelling of 381183172 in words is "three hundred eighty-one million, one hundred eighty-three thousand, one hundred seventy-two".