618676198408 has 16 divisors (see below), whose sum is σ = 1162601437500. Its totient is φ = 308649148416.

The previous prime is 618676198397. The next prime is 618676198501. The reversal of 618676198408 is 804891676816.

It can be written as a sum of positive squares in 2 ways, for example, as 617195641924 + 1480556484 = 785618^2 + 38478^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 618676198408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86115033 + ... + 86122216.

Almost surely, 2^618676198408 is an apocalyptic number.

It is an amenable number.

618676198408 is a deficient number, since it is larger than the sum of its proper divisors (543925239092).

618676198408 is a wasteful number, since it uses less digits than its factorization.

618676198408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172237704 (or 172237700 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 64.

The spelling of 618676198408 in words is "six hundred eighteen billion, six hundred seventy-six million, one hundred ninety-eight thousand, four hundred eight".