618306402 has 24 divisors (see below), whose sum is σ = 1438509456. Its totient is φ = 176658888.

The previous prime is 618306397. The next prime is 618306413. The reversal of 618306402 is 204603816.

618306402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 618306402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1051248 + ... + 1051835.

It is an arithmetic number, because the mean of its divisors is an integer number (59937894).

Almost surely, 2^618306402 is an apocalyptic number.

618306402 is an abundant number, since it is smaller than the sum of its proper divisors (820203054).

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

618306402 is a wasteful number, since it uses less digits than its factorization.

618306402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103102 (or 2103095 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 618306402 is about 24865.7676736513. The cubic root of 618306402 is about 851.9247740455.

The spelling of 618306402 in words is "six hundred eighteen million, three hundred six thousand, four hundred two".