161677834 has 16 divisors (see below), whose sum is σ = 254082816. Its totient is φ = 77061600.

The previous prime is 161677829. The next prime is 161677861. The reversal of 161677834 is 438776161.

It is a super-2 number, since 2×161677834² = 52279444013863112, which contains 22 as substring.

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, 15307 + ... + 23614.

It is an arithmetic number, because the mean of its divisors is an integer number (15880176).

Almost surely, 2^161677834 is an apocalyptic number.

161677834 is a deficient number, since it is larger than the sum of its proper divisors (92404982).

161677834 is a wasteful number, since it uses less digits than its factorization.

161677834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39021.

The product of its digits is 169344, while the sum is 43.

The square root of 161677834 is about 12715.2598872379. The cubic root of 161677834 is about 544.7745710784.

The spelling of 161677834 in words is "one hundred sixty-one million, six hundred seventy-seven thousand, eight hundred thirty-four".