618252977894 has 4 divisors (see below), whose sum is σ = 927379466844. Its totient is φ = 309126488946.

The previous prime is 618252977861. The next prime is 618252977917. The reversal of 618252977894 is 498779252816.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154563244472 + ... + 154563244475.

It is an arithmetic number, because the mean of its divisors is an integer number (231844866711).

Almost surely, 2^618252977894 is an apocalyptic number.

618252977894 is a deficient number, since it is larger than the sum of its proper divisors (309126488950).

618252977894 is a wasteful number, since it uses less digits than its factorization.

618252977894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309126488949.

The product of its digits is 121927680, while the sum is 68.

The spelling of 618252977894 in words is "six hundred eighteen billion, two hundred fifty-two million, nine hundred seventy-seven thousand, eight hundred ninety-four".