163939792 has 10 divisors (see below), whose sum is σ = 317633378. Its totient is φ = 81969888.

The previous prime is 163939753. The next prime is 163939793. The reversal of 163939792 is 297939361.

It can be written as a sum of positive squares in only one way, i.e., 112444816 + 51494976 = 10604^2 + 7176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163939793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5123103 + ... + 5123134.

Almost surely, 2^163939792 is an apocalyptic number.

It is an amenable number.

163939792 is a deficient number, since it is larger than the sum of its proper divisors (153693586).

163939792 is a wasteful number, since it uses less digits than its factorization.

163939792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246245 (or 10246239 counting only the distinct ones).

The product of its digits is 551124, while the sum is 49.

The square root of 163939792 is about 12803.8975316112. The cubic root of 163939792 is about 547.3033753886.

The spelling of 163939792 in words is "one hundred sixty-three million, nine hundred thirty-nine thousand, seven hundred ninety-two".