161530956 has 48 divisors (see below), whose sum is σ = 432302080. Its totient is φ = 52105680.

The previous prime is 161530933. The next prime is 161530961. The reversal of 161530956 is 659035161.

161530956 is a `hidden beast` number, since 1 + 615 + 30 + 9 + 5 + 6 = 666.

161530956 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 161530956.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20776 + ... + 27471.

Almost surely, 2^161530956 is an apocalyptic number.

It is an amenable number.

161530956 is an abundant number, since it is smaller than the sum of its proper divisors (270771124).

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

161530956 is a wasteful number, since it uses less digits than its factorization.

161530956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48291 (or 48283 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 161530956 is about 12709.4829163110. The cubic root of 161530956 is about 544.6095522877.

The spelling of 161530956 in words is "one hundred sixty-one million, five hundred thirty thousand, nine hundred fifty-six".