618172252 has 24 divisors (see below), whose sum is σ = 1109450160. Its totient is φ = 301203840.

The previous prime is 618172229. The next prime is 618172253. The reversal of 618172252 is 252271816.

It is a happy number.

618172252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618172253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200023 + ... + 203089.

It is an arithmetic number, because the mean of its divisors is an integer number (46227090).

Almost surely, 2^618172252 is an apocalyptic number.

It is an amenable number.

618172252 is a deficient number, since it is larger than the sum of its proper divisors (491277908).

618172252 is a wasteful number, since it uses less digits than its factorization.

618172252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341 (or 4339 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 618172252 is about 24863.0700437416. The cubic root of 618172252 is about 851.8631573593.

The spelling of 618172252 in words is "six hundred eighteen million, one hundred seventy-two thousand, two hundred fifty-two".