318983323939638 has 16 divisors (see below), whose sum is σ = 645652993035456. Its totient is φ = 105046717120520.

The previous prime is 318983323939627. The next prime is 318983323939639. The reversal of 318983323939638 is 836939323389813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318983323939639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320264380968 + ... + 320264381963.

It is an arithmetic number, because the mean of its divisors is an integer number (40353312064716).

Almost surely, 2^{318983323939638} is an apocalyptic number.

318983323939638 is an abundant number, since it is smaller than the sum of its proper divisors (326669669095818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318983323939638 is a wasteful number, since it uses less digits than its factorization.

318983323939638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640528763019.

The product of its digits is 3265173504, while the sum is 78.

The spelling of 318983323939638 in words is "three hundred eighteen trillion, nine hundred eighty-three billion, three hundred twenty-three million, nine hundred thirty-nine thousand, six hundred thirty-eight".