618395169938 has 16 divisors (see below), whose sum is σ = 1141652621760. Its totient is φ = 244639847376.

The previous prime is 618395169929. The next prime is 618395169941. The reversal of 618395169938 is 839961593816.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1698887648 + ... + 1698888011.

It is an arithmetic number, because the mean of its divisors is an integer number (71353288860).

Almost surely, 2^618395169938 is an apocalyptic number.

618395169938 is a deficient number, since it is larger than the sum of its proper divisors (523257451822).

618395169938 is a wasteful number, since it uses less digits than its factorization.

618395169938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3397775681.

The product of its digits is 75582720, while the sum is 68.

The spelling of 618395169938 in words is "six hundred eighteen billion, three hundred ninety-five million, one hundred sixty-nine thousand, nine hundred thirty-eight".