161930708 has 12 divisors (see below), whose sum is σ = 283495380. Its totient is φ = 80932032.

The previous prime is 161930707. The next prime is 161930767. The reversal of 161930708 is 807039161.

It can be written as a sum of positive squares in 2 ways, for example, as 136002244 + 25928464 = 11662^2 + 5092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161930707) 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, 4958 + ... + 18666.

It is an arithmetic number, because the mean of its divisors is an integer number (23624615).

Almost surely, 2^161930708 is an apocalyptic number.

It is an amenable number.

161930708 is a deficient number, since it is larger than the sum of its proper divisors (121564672).

161930708 is a wasteful number, since it uses less digits than its factorization.

161930708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16666 (or 16664 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 161930708 is about 12725.1997233835. The cubic root of 161930708 is about 545.0584433580.

Adding to 161930708 its reverse (807039161), we get a palindrome (968969869).

The spelling of 161930708 in words is "one hundred sixty-one million, nine hundred thirty thousand, seven hundred eight".