161653360 has 40 divisors (see below), whose sum is σ = 410013936. Its totient is φ = 58782720.

The previous prime is 161653309. The next prime is 161653381. The reversal of 161653360 is 63356161.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×161653360² = 52263617598579200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90969 + ... + 92728.

Almost surely, 2^161653360 is an apocalyptic number.

161653360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161653360 is an abundant number, since it is smaller than the sum of its proper divisors (248360576).

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

161653360 is a wasteful number, since it uses less digits than its factorization.

161653360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183721 (or 183715 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 161653360 is about 12714.2974638790. The cubic root of 161653360 is about 544.7470812543.

The spelling of 161653360 in words is "one hundred sixty-one million, six hundred fifty-three thousand, three hundred sixty".