161239108 has 12 divisors (see below), whose sum is σ = 294436800. Its totient is φ = 77114312.

The previous prime is 161239103. The next prime is 161239139. The reversal of 161239108 is 801932161.

It is a self number, because there is not a number n which added to its sum of digits gives 161239108.

It is not an unprimeable number, because it can be changed into a prime (161239103) 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, 876208 + ... + 876391.

It is an arithmetic number, because the mean of its divisors is an integer number (24536400).

Almost surely, 2^161239108 is an apocalyptic number.

It is an amenable number.

161239108 is a deficient number, since it is larger than the sum of its proper divisors (133197692).

161239108 is a wasteful number, since it uses less digits than its factorization.

161239108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752626 (or 1752624 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 161239108 is about 12697.9962198766. The cubic root of 161239108 is about 544.2813612648.

The spelling of 161239108 in words is "one hundred sixty-one million, two hundred thirty-nine thousand, one hundred eight".