161676642 has 16 divisors (see below), whose sum is σ = 323521632. Its totient is φ = 53864160.

The previous prime is 161676607. The next prime is 161676667. The reversal of 161676642 is 246676161.

It is a super-2 number, since 2×161676642² = 52278673136792328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161676642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7917 + ... + 19647.

It is an arithmetic number, because the mean of its divisors is an integer number (20220102).

Almost surely, 2^161676642 is an apocalyptic number.

161676642 is an abundant number, since it is smaller than the sum of its proper divisors (161844990).

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

161676642 is a wasteful number, since it uses less digits than its factorization.

161676642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033.

The product of its digits is 72576, while the sum is 39.

The square root of 161676642 is about 12715.2130143384. The cubic root of 161676642 is about 544.7732322577.

The spelling of 161676642 in words is "one hundred sixty-one million, six hundred seventy-six thousand, six hundred forty-two".