161485764 has 48 divisors (see below), whose sum is σ = 411862080. Its totient is φ = 48839040.

The previous prime is 161485763. The next prime is 161485781. The reversal of 161485764 is 467584161.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161485763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95922 + ... + 97590.

It is an arithmetic number, because the mean of its divisors is an integer number (8580460).

Almost surely, 2^161485764 is an apocalyptic number.

It is an amenable number.

161485764 is an abundant number, since it is smaller than the sum of its proper divisors (250376316).

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

161485764 is a wasteful number, since it uses less digits than its factorization.

161485764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420 (or 2418 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 161485764 is about 12707.7049068665. The cubic root of 161485764 is about 544.5587585345.

It can be divided in two parts, 16148 and 5764, that added together give a palindrome (21912).

The spelling of 161485764 in words is "one hundred sixty-one million, four hundred eighty-five thousand, seven hundred sixty-four".