18993064703 has 2 divisors, whose sum is σ = 18993064704. Its totient is φ = 18993064702.

The previous prime is 18993064693. The next prime is 18993064711. The reversal of 18993064703 is 30746039981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18993064703 - 2¹² = 18993060607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18993064403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9496532351 + 9496532352.

It is an arithmetic number, because the mean of its divisors is an integer number (9496532352).

Almost surely, 2^18993064703 is an apocalyptic number.

18993064703 is a deficient number, since it is larger than the sum of its proper divisors (1).

18993064703 is an equidigital number, since it uses as much as digits as its factorization.

18993064703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 18993064703 in words is "eighteen billion, nine hundred ninety-three million, sixty-four thousand, seven hundred three".