618402290687 has 4 divisors (see below), whose sum is σ = 618405097200. Its totient is φ = 618399484176.

The previous prime is 618402290683. The next prime is 618402290711. The reversal of 618402290687 is 786092204816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 618402290687 - 2² = 618402290683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618402290683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041683 + ... + 1523780.

It is an arithmetic number, because the mean of its divisors is an integer number (154601274300).

Almost surely, 2^618402290687 is an apocalyptic number.

618402290687 is a deficient number, since it is larger than the sum of its proper divisors (2806513).

618402290687 is a wasteful number, since it uses less digits than its factorization.

618402290687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806512.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 618402290687 in words is "six hundred eighteen billion, four hundred two million, two hundred ninety thousand, six hundred eighty-seven".