161286984 has 64 divisors (see below), whose sum is σ = 449064000. Its totient is φ = 53637120.

The previous prime is 161286977. The next prime is 161287019. The reversal of 161286984 is 489682161.

It is a nude number because it is divisible by every one of its digits.

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, 165619 + ... + 166589.

It is an arithmetic number, because the mean of its divisors is an integer number (7016625).

Almost surely, 2^161286984 is an apocalyptic number.

It is an amenable number.

161286984 is an abundant number, since it is smaller than the sum of its proper divisors (287777016).

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

161286984 is a wasteful number, since it uses less digits than its factorization.

161286984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1745 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 161286984 is about 12699.8812592874. The cubic root of 161286984 is about 544.3352262692.

The spelling of 161286984 in words is "one hundred sixty-one million, two hundred eighty-six thousand, nine hundred eighty-four".