161654164 has 12 divisors (see below), whose sum is σ = 323308384. Its totient is φ = 69280344.

The previous prime is 161654117. The next prime is 161654179. The reversal of 161654164 is 461456161.

161654164 is an admirable number.

It is a super-2 number, since 2×161654164² = 52264137477077792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2886654 + ... + 2886709.

Almost surely, 2^161654164 is an apocalyptic number.

161654164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161654164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161654164 is a wasteful number, since it uses less digits than its factorization.

161654164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773374 (or 5773372 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 161654164 is about 12714.3290817880. The cubic root of 161654164 is about 544.7479843718.

The spelling of 161654164 in words is "one hundred sixty-one million, six hundred fifty-four thousand, one hundred sixty-four".