618941172 has 12 divisors (see below), whose sum is σ = 1444196096. Its totient is φ = 206313720.

The previous prime is 618941161. The next prime is 618941173. The reversal of 618941172 is 271149816.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 618941172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618941173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25789204 + ... + 25789227.

Almost surely, 2^618941172 is an apocalyptic number.

It is an amenable number.

618941172 is an abundant number, since it is smaller than the sum of its proper divisors (825254924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618941172 is a wasteful number, since it uses less digits than its factorization.

618941172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51578438 (or 51578436 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 618941172 is about 24878.5283326808. The cubic root of 618941172 is about 852.2162106396.

The spelling of 618941172 in words is "six hundred eighteen million, nine hundred forty-one thousand, one hundred seventy-two".