618131802 has 16 divisors (see below), whose sum is σ = 1238974272. Its totient is φ = 205592160.

The previous prime is 618131797. The next prime is 618131819. The reversal of 618131802 is 208131816.

It is a self number, because there is not a number n which added to its sum of digits gives 618131802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109974 + ... + 115457.

It is an arithmetic number, because the mean of its divisors is an integer number (77435892).

Almost surely, 2^618131802 is an apocalyptic number.

618131802 is an abundant number, since it is smaller than the sum of its proper divisors (620842470).

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

618131802 is a wasteful number, since it uses less digits than its factorization.

618131802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225893.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 618131802 is about 24862.2565749773. The cubic root of 618131802 is about 851.8445764453.

The spelling of 618131802 in words is "six hundred eighteen million, one hundred thirty-one thousand, eight hundred two".