18774486380723 has 2 divisors, whose sum is σ = 18774486380724. Its totient is φ = 18774486380722.

The previous prime is 18774486380681. The next prime is 18774486380731. The reversal of 18774486380723 is 32708368447781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18774486380723 - 2⁶ = 18774486380659 is a prime.

It is not a weakly prime, because it can be changed into another prime (18774486380743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9387243190361 + 9387243190362.

It is an arithmetic number, because the mean of its divisors is an integer number (9387243190362).

Almost surely, 2^{18774486380723} is an apocalyptic number.

18774486380723 is a deficient number, since it is larger than the sum of its proper divisors (1).

18774486380723 is an equidigital number, since it uses as much as digits as its factorization.

18774486380723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 303464448, while the sum is 68.

The spelling of 18774486380723 in words is "eighteen trillion, seven hundred seventy-four billion, four hundred eighty-six million, three hundred eighty thousand, seven hundred twenty-three".