163372973 has 2 divisors, whose sum is σ = 163372974. Its totient is φ = 163372972.

The previous prime is 163372943. The next prime is 163372981. The reversal of 163372973 is 379273361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100440484 + 62932489 = 10022^2 + 7933^2 .

It is a cyclic number.

It is not a de Polignac number, because 163372973 - 2⁸ = 163372717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163372973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163372943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81686486 + 81686487.

It is an arithmetic number, because the mean of its divisors is an integer number (81686487).

Almost surely, 2^163372973 is an apocalyptic number.

It is an amenable number.

163372973 is a deficient number, since it is larger than the sum of its proper divisors (1).

163372973 is an equidigital number, since it uses as much as digits as its factorization.

163372973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 41.

The square root of 163372973 is about 12781.7437386297. The cubic root of 163372973 is about 546.6718830473.

The spelling of 163372973 in words is "one hundred sixty-three million, three hundred seventy-two thousand, nine hundred seventy-three".