18977085103 has 2 divisors, whose sum is σ = 18977085104. Its totient is φ = 18977085102.

The previous prime is 18977085097. The next prime is 18977085121. The reversal of 18977085103 is 30158077981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18977085103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18977025103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9488542551 + 9488542552.

It is an arithmetic number, because the mean of its divisors is an integer number (9488542552).

Almost surely, 2^18977085103 is an apocalyptic number.

18977085103 is a deficient number, since it is larger than the sum of its proper divisors (1).

18977085103 is an equidigital number, since it uses as much as digits as its factorization.

18977085103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 18977085103 in words is "eighteen billion, nine hundred seventy-seven million, eighty-five thousand, one hundred three".