161789084 has 24 divisors (see below), whose sum is σ = 296707488. Its totient is φ = 77045760.

The previous prime is 161789083. The next prime is 161789129. The reversal of 161789084 is 480987161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161789083) by changing a digit.

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, 18524 + ... + 25820.

It is an arithmetic number, because the mean of its divisors is an integer number (12362812).

Almost surely, 2^161789084 is an apocalyptic number.

It is an amenable number.

161789084 is a deficient number, since it is larger than the sum of its proper divisors (134918404).

161789084 is a wasteful number, since it uses less digits than its factorization.

161789084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7565 (or 7563 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 161789084 is about 12719.6337997601. The cubic root of 161789084 is about 544.8994949757.

The spelling of 161789084 in words is "one hundred sixty-one million, seven hundred eighty-nine thousand, eighty-four".