380156161 has 32 divisors (see below), whose sum is σ = 509184000. Its totient is φ = 280581840.

The previous prime is 380156149. The next prime is 380156171. The reversal of 380156161 is 161651083.

It is not a de Polignac number, because 380156161 - 2⁵ = 380156129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380156171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69036 + ... + 74338.

It is an arithmetic number, because the mean of its divisors is an integer number (15912000).

Almost surely, 2^380156161 is an apocalyptic number.

It is an amenable number.

380156161 is a deficient number, since it is larger than the sum of its proper divisors (129027839).

380156161 is a wasteful number, since it uses less digits than its factorization.

380156161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5354 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 380156161 is about 19497.5937233290. The cubic root of 380156161 is about 724.4148499273.

The spelling of 380156161 in words is "three hundred eighty million, one hundred fifty-six thousand, one hundred sixty-one".