381366156 has 12 divisors (see below), whose sum is σ = 889854392. Its totient is φ = 127122048.

The previous prime is 381366143. The next prime is 381366169. The reversal of 381366156 is 651663183.

381366156 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (381366143) and next prime (381366169).

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

381366156 is strictly pandigital in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15890245 + ... + 15890268.

Almost surely, 2^381366156 is an apocalyptic number.

It is an amenable number.

381366156 is an abundant number, since it is smaller than the sum of its proper divisors (508488236).

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

381366156 is a wasteful number, since it uses less digits than its factorization.

381366156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31780520 (or 31780518 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 381366156 is about 19528.5984136087. The cubic root of 381366156 is about 725.1826133731.

The spelling of 381366156 in words is "three hundred eighty-one million, three hundred sixty-six thousand, one hundred fifty-six".