161089530 has 32 divisors (see below), whose sum is σ = 441846144. Its totient is φ = 36820416.

The previous prime is 161089483. The next prime is 161089559. The reversal of 161089530 is 35980161.

It is a junction number, because it is equal to n+sod(n) for n = 161089491 and 161089500.

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, 383337 + ... + 383756.

It is an arithmetic number, because the mean of its divisors is an integer number (13807692).

Almost surely, 2^161089530 is an apocalyptic number.

161089530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161089530 is an abundant number, since it is smaller than the sum of its proper divisors (280756614).

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

161089530 is a wasteful number, since it uses less digits than its factorization.

161089530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767110.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 161089530 is about 12692.1050263540. The cubic root of 161089530 is about 544.1130032151.

The spelling of 161089530 in words is "one hundred sixty-one million, eighty-nine thousand, five hundred thirty".