163690372 has 12 divisors (see below), whose sum is σ = 286576780. Its totient is φ = 81811296.

The previous prime is 163690363. The next prime is 163690421. The reversal of 163690372 is 273096361.

It can be written as a sum of positive squares in 2 ways, for example, as 91508356 + 72182016 = 9566^2 + 8496^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4654 + ... + 18682.

Almost surely, 2^163690372 is an apocalyptic number.

It is an amenable number.

163690372 is a deficient number, since it is larger than the sum of its proper divisors (122886408).

163690372 is a wasteful number, since it uses less digits than its factorization.

163690372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16950 (or 16948 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 163690372 is about 12794.1538211794. The cubic root of 163690372 is about 547.0256764983.

The spelling of 163690372 in words is "one hundred sixty-three million, six hundred ninety thousand, three hundred seventy-two".