161234516 has 24 divisors (see below), whose sum is σ = 287608104. Its totient is φ = 79073280.

The previous prime is 161234473. The next prime is 161234527. The reversal of 161234516 is 615432161.

It is a happy number.

161234516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 16032016 + 145202500 = 4004^2 + 12050^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54926 + ... + 57786.

It is an arithmetic number, because the mean of its divisors is an integer number (11983671).

Almost surely, 2^161234516 is an apocalyptic number.

It is an amenable number.

161234516 is a deficient number, since it is larger than the sum of its proper divisors (126373588).

161234516 is a wasteful number, since it uses less digits than its factorization.

161234516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131 (or 3129 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 161234516 is about 12697.8154026588. The cubic root of 161234516 is about 544.2761942724.

Adding to 161234516 its reverse (615432161), we get a palindrome (776666677).

The spelling of 161234516 in words is "one hundred sixty-one million, two hundred thirty-four thousand, five hundred sixteen".