618840188874 has 24 divisors (see below), whose sum is σ = 1340885931840. Its totient is φ = 206269982568.

The previous prime is 618840188849. The next prime is 618840189013. The reversal of 618840188874 is 478881048816.

618840188874 is a `hidden beast` number, since 6 + 1 + 88 + 401 + 8 + 88 + 74 = 666.

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, 456732 + ... + 1202615.

It is an arithmetic number, because the mean of its divisors is an integer number (55870247160).

Almost surely, 2^618840188874 is an apocalyptic number.

618840188874 is an abundant number, since it is smaller than the sum of its proper divisors (722045742966).

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

618840188874 is a wasteful number, since it uses less digits than its factorization.

618840188874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680074 (or 1680071 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 63.

The spelling of 618840188874 in words is "six hundred eighteen billion, eight hundred forty million, one hundred eighty-eight thousand, eight hundred seventy-four".