618955016836 has 24 divisors (see below), whose sum is σ = 1168433124824. Its totient is φ = 285196204800.

The previous prime is 618955016821. The next prime is 618955016857. The reversal of 618955016836 is 638610559816.

It can be written as a sum of positive squares in 4 ways, for example, as 74523540100 + 544431476736 = 272990^2 + 737856^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9871395 + ... + 9933898.

Almost surely, 2^618955016836 is an apocalyptic number.

It is an amenable number.

618955016836 is a deficient number, since it is larger than the sum of its proper divisors (549478107988).

618955016836 is a wasteful number, since it uses less digits than its factorization.

618955016836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19805911 (or 19805909 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 58.

The spelling of 618955016836 in words is "six hundred eighteen billion, nine hundred fifty-five million, sixteen thousand, eight hundred thirty-six".