256161367 has 24 divisors (see below), whose sum is σ = 327540240. Its totient is φ = 198092160.

The previous prime is 256161359. The next prime is 256161377. The reversal of 256161367 is 763161652.

It is not a de Polignac number, because 256161367 - 2³ = 256161359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256161337) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72109 + ... + 75577.

It is an arithmetic number, because the mean of its divisors is an integer number (13647510).

Almost surely, 2^256161367 is an apocalyptic number.

256161367 is a deficient number, since it is larger than the sum of its proper divisors (71378873).

256161367 is a wasteful number, since it uses less digits than its factorization.

256161367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3631 (or 3624 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 256161367 is about 16005.0419243437. The cubic root of 256161367 is about 635.0938063826.

The spelling of 256161367 in words is "two hundred fifty-six million, one hundred sixty-one thousand, three hundred sixty-seven".