161614638 has 24 divisors (see below), whose sum is σ = 352521000. Its totient is φ = 53509104.

The previous prime is 161614613. The next prime is 161614639. The reversal of 161614638 is 836416161.

161614638 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 14 + 638 = 666.

161614638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161614638² = 52238582431742088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161614639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27448 + ... + 32811.

It is an arithmetic number, because the mean of its divisors is an integer number (14688375).

Almost surely, 2^161614638 is an apocalyptic number.

161614638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

161614638 is an abundant number, since it is smaller than the sum of its proper divisors (190906362).

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

161614638 is a wasteful number, since it uses less digits than its factorization.

161614638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60416 (or 60413 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 161614638 is about 12712.7745988041. The cubic root of 161614638 is about 544.7035820431.

The spelling of 161614638 in words is "one hundred sixty-one million, six hundred fourteen thousand, six hundred thirty-eight".