17986992937 has 2 divisors, whose sum is σ = 17986992938. Its totient is φ = 17986992936.

The previous prime is 17986992913. The next prime is 17986992983. The reversal of 17986992937 is 73929968971.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16530502041 + 1456490896 = 128571^2 + 38164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17986992937 is a prime.

It is not a weakly prime, because it can be changed into another prime (17986992337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8993496468 + 8993496469.

It is an arithmetic number, because the mean of its divisors is an integer number (8993496469).

Almost surely, 2^17986992937 is an apocalyptic number.

It is an amenable number.

17986992937 is a deficient number, since it is larger than the sum of its proper divisors (1).

17986992937 is an equidigital number, since it uses as much as digits as its factorization.

17986992937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92588832, while the sum is 70.

The spelling of 17986992937 in words is "seventeen billion, nine hundred eighty-six million, nine hundred ninety-two thousand, nine hundred thirty-seven".