161539416 has 48 divisors (see below), whose sum is σ = 439508160. Its totient is φ = 53599680.

The previous prime is 161539403. The next prime is 161539429. The reversal of 161539416 is 614935161.

161539416 is a `hidden beast` number, since 1 + 615 + 39 + 4 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (161539403) and next prime (161539429).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11026 + ... + 21086.

It is an arithmetic number, because the mean of its divisors is an integer number (9156420).

Almost surely, 2^161539416 is an apocalyptic number.

It is an amenable number.

161539416 is an abundant number, since it is smaller than the sum of its proper divisors (277968744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161539416 is a wasteful number, since it uses less digits than its factorization.

161539416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296 (or 10289 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 161539416 is about 12709.8157343055. The cubic root of 161539416 is about 544.6190598902.

The spelling of 161539416 in words is "one hundred sixty-one million, five hundred thirty-nine thousand, four hundred sixteen".