161394674 has 16 divisors (see below), whose sum is σ = 276993216. Its totient is φ = 69090000.

The previous prime is 161394661. The next prime is 161394697. The reversal of 161394674 is 476493161.

It is a Curzon number.

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, 7049 + ... + 19299.

It is an arithmetic number, because the mean of its divisors is an integer number (17312076).

Almost surely, 2^161394674 is an apocalyptic number.

161394674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161394674 is a deficient number, since it is larger than the sum of its proper divisors (115598542).

161394674 is a wasteful number, since it uses less digits than its factorization.

161394674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13201.

The product of its digits is 108864, while the sum is 41.

The square root of 161394674 is about 12704.1203552233. The cubic root of 161394674 is about 544.4563487085.

The spelling of 161394674 in words is "one hundred sixty-one million, three hundred ninety-four thousand, six hundred seventy-four".