161089596 has 18 divisors (see below), whose sum is σ = 407198792. Its totient is φ = 53696520.

The previous prime is 161089589. The next prime is 161089639. The reversal of 161089596 is 695980161.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2237320 + ... + 2237391.

Almost surely, 2^161089596 is an apocalyptic number.

It is an amenable number.

161089596 is an abundant number, since it is smaller than the sum of its proper divisors (246109196).

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

161089596 is a wasteful number, since it uses less digits than its factorization.

161089596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4474721 (or 4474716 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 161089596 is about 12692.1076263952. The cubic root of 161089596 is about 544.1130775246.

The spelling of 161089596 in words is "one hundred sixty-one million, eighty-nine thousand, five hundred ninety-six".