161679274 has 8 divisors (see below), whose sum is σ = 242651808. Its totient is φ = 80795340.

The previous prime is 161679209. The next prime is 161679313. The reversal of 161679274 is 472976161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161679274² = 52280375282334152, 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 161679274.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17382 + ... + 25009.

It is an arithmetic number, because the mean of its divisors is an integer number (30331476).

Almost surely, 2^161679274 is an apocalyptic number.

161679274 is a deficient number, since it is larger than the sum of its proper divisors (80972534).

161679274 is a wasteful number, since it uses less digits than its factorization.

161679274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44300.

The product of its digits is 127008, while the sum is 43.

The square root of 161679274 is about 12715.3165119866. The cubic root of 161679274 is about 544.7761884369.

The spelling of 161679274 in words is "one hundred sixty-one million, six hundred seventy-nine thousand, two hundred seventy-four".