163420372 has 6 divisors (see below), whose sum is σ = 285985658. Its totient is φ = 81710184.

The previous prime is 163420343. The next prime is 163420391. The reversal of 163420372 is 273024361.

It can be written as a sum of positive squares in only one way, i.e., 86787856 + 76632516 = 9316^2 + 8754^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163420372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20427543 + ... + 20427550.

Almost surely, 2^163420372 is an apocalyptic number.

It is an amenable number.

163420372 is a deficient number, since it is larger than the sum of its proper divisors (122565286).

163420372 is a wasteful number, since it uses less digits than its factorization.

163420372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40855097 (or 40855095 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 163420372 is about 12783.5977721454. The cubic root of 163420372 is about 546.7247461262.

The spelling of 163420372 in words is "one hundred sixty-three million, four hundred twenty thousand, three hundred seventy-two".