161792889 has 8 divisors (see below), whose sum is σ = 215793312. Its totient is φ = 107827200.

The previous prime is 161792867. The next prime is 161792957. The reversal of 161792889 is 988297161.

161792889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161792889 - 2¹¹ = 161790841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161792819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5497 + ... + 18809.

It is an arithmetic number, because the mean of its divisors is an integer number (26974164).

Almost surely, 2^161792889 is an apocalyptic number.

It is an amenable number.

161792889 is a deficient number, since it is larger than the sum of its proper divisors (54000423).

161792889 is a wasteful number, since it uses less digits than its factorization.

161792889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367.

The product of its digits is 435456, while the sum is 51.

The square root of 161792889 is about 12719.7833707968. The cubic root of 161792889 is about 544.9037666407.

The spelling of 161792889 in words is "one hundred sixty-one million, seven hundred ninety-two thousand, eight hundred eighty-nine".