172163983 has 2 divisors, whose sum is σ = 172163984. Its totient is φ = 172163982.

The previous prime is 172163977. The next prime is 172164001. The reversal of 172163983 is 389361271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172163983 - 2⁵ = 172163951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172163903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86081991 + 86081992.

It is an arithmetic number, because the mean of its divisors is an integer number (86081992).

Almost surely, 2^172163983 is an apocalyptic number.

172163983 is a deficient number, since it is larger than the sum of its proper divisors (1).

172163983 is an equidigital number, since it uses as much as digits as its factorization.

172163983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 172163983 is about 13121.1273524800. The cubic root of 172163983 is about 556.3064566188.

The spelling of 172163983 in words is "one hundred seventy-two million, one hundred sixty-three thousand, nine hundred eighty-three".