161489076 has 48 divisors (see below), whose sum is σ = 435496320. Its totient is φ = 45619200.

The previous prime is 161489057. The next prime is 161489087. The reversal of 161489076 is 670984161.

161489076 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 (42).

It is a congruent number.

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, 3325 + ... + 18276.

It is an arithmetic number, because the mean of its divisors is an integer number (9072840).

Almost surely, 2^161489076 is an apocalyptic number.

It is an amenable number.

161489076 is an abundant number, since it is smaller than the sum of its proper divisors (274007244).

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

161489076 is a wasteful number, since it uses less digits than its factorization.

161489076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21704 (or 21702 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 161489076 is about 12707.8352208391. The cubic root of 161489076 is about 544.5624813937.

The spelling of 161489076 in words is "one hundred sixty-one million, four hundred eighty-nine thousand, seventy-six".