618621252 has 24 divisors (see below), whose sum is σ = 1467114432. Its totient is φ = 202826400.

The previous prime is 618621239. The next prime is 618621253. The reversal of 618621252 is 252126816.

618621252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (618621253) 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, 421824 + ... + 423287.

It is an arithmetic number, because the mean of its divisors is an integer number (61129768).

Almost surely, 2^618621252 is an apocalyptic number.

It is an amenable number.

618621252 is an abundant number, since it is smaller than the sum of its proper divisors (848493180).

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

618621252 is a wasteful number, since it uses less digits than its factorization.

618621252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845179 (or 845177 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 618621252 is about 24872.0978608560. The cubic root of 618621252 is about 852.0693533881.

The spelling of 618621252 in words is "six hundred eighteen million, six hundred twenty-one thousand, two hundred fifty-two".