161351516 has 12 divisors (see below), whose sum is σ = 282470160. Its totient is φ = 80645760.

The previous prime is 161351513. The next prime is 161351549. The reversal of 161351516 is 615153161.

161351516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161351513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8300 + ... + 19788.

It is an arithmetic number, because the mean of its divisors is an integer number (23539180).

Almost surely, 2^161351516 is an apocalyptic number.

It is an amenable number.

161351516 is a deficient number, since it is larger than the sum of its proper divisors (121118644).

161351516 is a wasteful number, since it uses less digits than its factorization.

161351516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15004 (or 15002 counting only the distinct ones).

The product of its digits is 2700, while the sum is 29.

The square root of 161351516 is about 12702.4216588806. The cubic root of 161351516 is about 544.4078139762.

The spelling of 161351516 in words is "one hundred sixty-one million, three hundred fifty-one thousand, five hundred sixteen".