161458137 has 32 divisors (see below), whose sum is σ = 257679360. Its totient is φ = 99625680.

The previous prime is 161458133. The next prime is 161458139. The reversal of 161458137 is 731854161.

161458137 is a `hidden beast` number, since 1 + 614 + 5 + 8 + 1 + 37 = 666.

It is not a de Polignac number, because 161458137 - 2² = 161458133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161458133) 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, 15058 + ... + 23444.

It is an arithmetic number, because the mean of its divisors is an integer number (8052480).

Almost surely, 2^161458137 is an apocalyptic number.

It is an amenable number.

161458137 is a deficient number, since it is larger than the sum of its proper divisors (96221223).

161458137 is a wasteful number, since it uses less digits than its factorization.

161458137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450 (or 8444 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 161458137 is about 12706.6178426834. The cubic root of 161458137 is about 544.5277023752.

The spelling of 161458137 in words is "one hundred sixty-one million, four hundred fifty-eight thousand, one hundred thirty-seven".