161589794 has 32 divisors (see below), whose sum is σ = 278899200. Its totient is φ = 69707520.

The previous prime is 161589773. The next prime is 161589797. The reversal of 161589794 is 497985161.

It is a super-2 number, since 2×161589794² = 52222523049924872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161589797) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15992 + ... + 24060.

It is an arithmetic number, because the mean of its divisors is an integer number (8715600).

Almost surely, 2^161589794 is an apocalyptic number.

161589794 is a deficient number, since it is larger than the sum of its proper divisors (117309406).

161589794 is a wasteful number, since it uses less digits than its factorization.

161589794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8138.

The product of its digits is 544320, while the sum is 50.

The square root of 161589794 is about 12711.7974338801. The cubic root of 161589794 is about 544.6756693296.

It can be divided in two parts, 16158 and 9794, that added together give a palindrome (25952).

The spelling of 161589794 in words is "one hundred sixty-one million, five hundred eighty-nine thousand, seven hundred ninety-four".