161126604 has 24 divisors (see below), whose sum is σ = 417735920. Its totient is φ = 53708832.

The previous prime is 161126599. The next prime is 161126617. The reversal of 161126604 is 406621161.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745849 + ... + 746064.

Almost surely, 2^161126604 is an apocalyptic number.

It is an amenable number.

161126604 is an abundant number, since it is smaller than the sum of its proper divisors (256609316).

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

161126604 is a wasteful number, since it uses less digits than its factorization.

161126604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491926 (or 1491918 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161126604 is about 12693.5654565611. The cubic root of 161126604 is about 544.1547416987.

Adding to 161126604 its reverse (406621161), we get a palindrome (567747765).

The spelling of 161126604 in words is "one hundred sixty-one million, one hundred twenty-six thousand, six hundred four".