381047156 has 12 divisors (see below), whose sum is σ = 762094368. Its totient is φ = 163305912.

The previous prime is 381047119. The next prime is 381047203. The reversal of 381047156 is 651740183.

381047156 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6804386 + ... + 6804441.

It is an arithmetic number, because the mean of its divisors is an integer number (63507864).

Almost surely, 2^381047156 is an apocalyptic number.

It is an amenable number.

381047156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

381047156 is a wasteful number, since it uses less digits than its factorization.

381047156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13608838 (or 13608836 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 381047156 is about 19520.4291961012. The cubic root of 381047156 is about 724.9803599912.

The spelling of 381047156 in words is "three hundred eighty-one million, forty-seven thousand, one hundred fifty-six".