161274016 has 12 divisors (see below), whose sum is σ = 317508282. Its totient is φ = 80636992.

The previous prime is 161274013. The next prime is 161274041. The reversal of 161274016 is 610472161.

It can be written as a sum of positive squares in only one way, i.e., 148742416 + 12531600 = 12196^2 + 3540^2 .

It is not an unprimeable number, because it can be changed into a prime (161274013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2519875 + ... + 2519938.

Almost surely, 2^161274016 is an apocalyptic number.

161274016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161274016 is a deficient number, since it is larger than the sum of its proper divisors (156234266).

161274016 is an equidigital number, since it uses as much as digits as its factorization.

161274016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039823 (or 5039815 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 161274016 is about 12699.3706930698. The cubic root of 161274016 is about 544.3206371019.

The spelling of 161274016 in words is "one hundred sixty-one million, two hundred seventy-four thousand, sixteen".