172418164 has 6 divisors (see below), whose sum is σ = 301731794. Its totient is φ = 86209080.

The previous prime is 172418159. The next prime is 172418167. The reversal of 172418164 is 461814271.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 107744400 + 64673764 = 10380^2 + 8042^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172418167) by changing a digit.

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 as a sum of consecutive naturals, namely, 21552267 + ... + 21552274.

Almost surely, 2^172418164 is an apocalyptic number.

It is an amenable number.

172418164 is a deficient number, since it is larger than the sum of its proper divisors (129313630).

172418164 is a wasteful number, since it uses less digits than its factorization.

172418164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43104545 (or 43104543 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 172418164 is about 13130.8097236994. The cubic root of 172418164 is about 556.5800968960.

The spelling of 172418164 in words is "one hundred seventy-two million, four hundred eighteen thousand, one hundred sixty-four".