163472917 has 2 divisors, whose sum is σ = 163472918. Its totient is φ = 163472916.

The previous prime is 163472879. The next prime is 163472929. The reversal of 163472917 is 719274361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139570596 + 23902321 = 11814^2 + 4889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163472917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163472917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163472957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81736458 + 81736459.

It is an arithmetic number, because the mean of its divisors is an integer number (81736459).

Almost surely, 2^163472917 is an apocalyptic number.

It is an amenable number.

163472917 is a deficient number, since it is larger than the sum of its proper divisors (1).

163472917 is an equidigital number, since it uses as much as digits as its factorization.

163472917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 40.

The square root of 163472917 is about 12785.6527795807. The cubic root of 163472917 is about 546.7833364823.

The spelling of 163472917 in words is "one hundred sixty-three million, four hundred seventy-two thousand, nine hundred seventeen".