18922446971 has 2 divisors, whose sum is σ = 18922446972. Its totient is φ = 18922446970.

The previous prime is 18922446943. The next prime is 18922447003. The reversal of 18922446971 is 17964422981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18922446971 - 2¹⁰ = 18922445947 is a prime.

It is not a weakly prime, because it can be changed into another prime (18922446271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9461223485 + 9461223486.

It is an arithmetic number, because the mean of its divisors is an integer number (9461223486).

Almost surely, 2^18922446971 is an apocalyptic number.

18922446971 is a deficient number, since it is larger than the sum of its proper divisors (1).

18922446971 is an equidigital number, since it uses as much as digits as its factorization.

18922446971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The spelling of 18922446971 in words is "eighteen billion, nine hundred twenty-two million, four hundred forty-six thousand, nine hundred seventy-one".