161165984 has 48 divisors (see below), whose sum is σ = 383963328. Its totient is φ = 65006592.

The previous prime is 161165981. The next prime is 161165987. The reversal of 161165984 is 489561161.

It is an interprime number because it is at equal distance from previous prime (161165981) and next prime (161165987).

It is not an unprimeable number, because it can be changed into a prime (161165981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17354 + ... + 24969.

It is an arithmetic number, because the mean of its divisors is an integer number (7999236).

Almost surely, 2^161165984 is an apocalyptic number.

161165984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

161165984 is an abundant number, since it is smaller than the sum of its proper divisors (222797344).

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

161165984 is a wasteful number, since it uses less digits than its factorization.

161165984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42357 (or 42349 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 161165984 is about 12695.1165414107. The cubic root of 161165984 is about 544.1990693013.

The spelling of 161165984 in words is "one hundred sixty-one million, one hundred sixty-five thousand, nine hundred eighty-four".