161234885 has 32 divisors (see below), whose sum is σ = 236535552. Its totient is φ = 102988800.

The previous prime is 161234849. The next prime is 161234891. The reversal of 161234885 is 588432161.

It is not a de Polignac number, because 161234885 - 2¹⁸ = 160972741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58754 + ... + 61436.

It is an arithmetic number, because the mean of its divisors is an integer number (7391736).

Almost surely, 2^161234885 is an apocalyptic number.

It is an amenable number.

161234885 is a deficient number, since it is larger than the sum of its proper divisors (75300667).

161234885 is a wasteful number, since it uses less digits than its factorization.

161234885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813.

The product of its digits is 46080, while the sum is 38.

The square root of 161234885 is about 12697.8299327090. The cubic root of 161234885 is about 544.2766094808.

The spelling of 161234885 in words is "one hundred sixty-one million, two hundred thirty-four thousand, eight hundred eighty-five".