163156372 has 6 divisors (see below), whose sum is σ = 285523658. Its totient is φ = 81578184.

The previous prime is 163156369. The next prime is 163156373. The reversal of 163156372 is 273651361.

It can be written as a sum of positive squares in only one way, i.e., 110796676 + 52359696 = 10526^2 + 7236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163156373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20394543 + ... + 20394550.

Almost surely, 2^163156372 is an apocalyptic number.

It is an amenable number.

163156372 is a deficient number, since it is larger than the sum of its proper divisors (122367286).

163156372 is a wasteful number, since it uses less digits than its factorization.

163156372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40789097 (or 40789095 counting only the distinct ones).

The product of its digits is 22680, while the sum is 34.

The square root of 163156372 is about 12773.2678669164. The cubic root of 163156372 is about 546.4301824314.

The spelling of 163156372 in words is "one hundred sixty-three million, one hundred fifty-six thousand, three hundred seventy-two".