161387600 has 120 divisors (see below), whose sum is σ = 433326432. Its totient is φ = 57254400.

The previous prime is 161387591. The next prime is 161387609. The reversal of 161387600 is 6783161.

It is an interprime number because it is at equal distance from previous prime (161387591) and next prime (161387609).

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161387609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188774 + ... + 189626.

Almost surely, 2^161387600 is an apocalyptic number.

161387600 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 161387600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216663216).

161387600 is an abundant number, since it is smaller than the sum of its proper divisors (271938832).

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

161387600 is a wasteful number, since it uses less digits than its factorization.

161387600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 161387600 is about 12703.8419385633. The cubic root of 161387600 is about 544.4483940047.

The spelling of 161387600 in words is "one hundred sixty-one million, three hundred eighty-seven thousand, six hundred".