18768346946731 has 2 divisors, whose sum is σ = 18768346946732. Its totient is φ = 18768346946730.

The previous prime is 18768346946647. The next prime is 18768346946749. The reversal of 18768346946731 is 13764964386781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18768346946731 - 2⁷ = 18768346946603 is a prime.

It is a super-2 number, since 2×18768346946731² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18768346946431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9384173473365 + 9384173473366.

It is an arithmetic number, because the mean of its divisors is an integer number (9384173473366).

Almost surely, 2^{18768346946731} is an apocalyptic number.

18768346946731 is a deficient number, since it is larger than the sum of its proper divisors (1).

18768346946731 is an equidigital number, since it uses as much as digits as its factorization.

18768346946731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 877879296, while the sum is 73.

The spelling of 18768346946731 in words is "eighteen trillion, seven hundred sixty-eight billion, three hundred forty-six million, nine hundred forty-six thousand, seven hundred thirty-one".