161650158 has 32 divisors (see below), whose sum is σ = 331812096. Its totient is φ = 52472448.

The previous prime is 161650133. The next prime is 161650171. The reversal of 161650158 is 851056161.

It is a super-2 number, since 2×161650158² = 52261547162849928, which contains 22 as substring.

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, 110991 + ... + 112437.

It is an arithmetic number, because the mean of its divisors is an integer number (10369128).

Almost surely, 2^161650158 is an apocalyptic number.

161650158 is an abundant number, since it is smaller than the sum of its proper divisors (170161938).

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

161650158 is a wasteful number, since it uses less digits than its factorization.

161650158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 161650158 is about 12714.1715420235. The cubic root of 161650158 is about 544.7434844806.

The spelling of 161650158 in words is "one hundred sixty-one million, six hundred fifty thousand, one hundred fifty-eight".