318672117437 has 2 divisors, whose sum is σ = 318672117438. Its totient is φ = 318672117436.

The previous prime is 318672117397. The next prime is 318672117451. The reversal of 318672117437 is 734711276813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318314869636 + 357247801 = 564194^2 + 18901^2 .

It is a cyclic number.

It is not a de Polignac number, because 318672117437 - 2²⁴ = 318655340221 is a prime.

It is a super-2 number, since 2×318672117437² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318672117457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159336058718 + 159336058719.

It is an arithmetic number, because the mean of its divisors is an integer number (159336058719).

Almost surely, 2^318672117437 is an apocalyptic number.

It is an amenable number.

318672117437 is a deficient number, since it is larger than the sum of its proper divisors (1).

318672117437 is an equidigital number, since it uses as much as digits as its factorization.

318672117437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 50.

The spelling of 318672117437 in words is "three hundred eighteen billion, six hundred seventy-two million, one hundred seventeen thousand, four hundred thirty-seven".