161149059 has 6 divisors (see below), whose sum is σ = 232770876. Its totient is φ = 107432700.

The previous prime is 161149031. The next prime is 161149061. The reversal of 161149059 is 950941161.

161149059 is a `hidden beast` number, since 161 + 1 + 490 + 5 + 9 = 666.

It is not a de Polignac number, because 161149059 - 2⁷ = 161148931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161149099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8952717 + ... + 8952734.

It is an arithmetic number, because the mean of its divisors is an integer number (38795146).

Almost surely, 2^161149059 is an apocalyptic number.

161149059 is a deficient number, since it is larger than the sum of its proper divisors (71621817).

161149059 is a wasteful number, since it uses less digits than its factorization.

161149059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17905457 (or 17905454 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 161149059 is about 12694.4499290044. The cubic root of 161149059 is about 544.1800187725.

The spelling of 161149059 in words is "one hundred sixty-one million, one hundred forty-nine thousand, fifty-nine".