161071158 has 32 divisors (see below), whose sum is σ = 341750880. Its totient is φ = 50434560.

The previous prime is 161071147. The next prime is 161071193. The reversal of 161071158 is 851170161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66228 + ... + 68616.

It is an arithmetic number, because the mean of its divisors is an integer number (10679715).

Almost surely, 2^161071158 is an apocalyptic number.

161071158 is an abundant number, since it is smaller than the sum of its proper divisors (180679722).

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

161071158 is a wasteful number, since it uses less digits than its factorization.

161071158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072.

The product of its (nonzero) digits is 1680, while the sum is 30.

The square root of 161071158 is about 12691.3812487058. The cubic root of 161071158 is about 544.0923173597.

The spelling of 161071158 in words is "one hundred sixty-one million, seventy-one thousand, one hundred fifty-eight".