161163600 has 120 divisors (see below), whose sum is σ = 556026912. Its totient is φ = 39667200.

The previous prime is 161163593. The next prime is 161163617. The reversal of 161163600 is 6361161.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10435 + ... + 20765.

Almost surely, 2^161163600 is an apocalyptic number.

161163600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161163600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278013456).

161163600 is an abundant number, since it is smaller than the sum of its proper divisors (394863312).

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

161163600 is a wasteful number, since it uses less digits than its factorization.

161163600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10365 (or 10354 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 161163600 is about 12695.0226466911. The cubic root of 161163600 is about 544.1963859870.

The spelling of 161163600 in words is "one hundred sixty-one million, one hundred sixty-three thousand, six hundred".