18235934971 has 2 divisors, whose sum is σ = 18235934972. Its totient is φ = 18235934970.

The previous prime is 18235934963. The next prime is 18235935001. The reversal of 18235934971 is 17943953281.

It is a weak prime.

It is an emirp because it is prime and its reverse (17943953281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18235934971 - 2³ = 18235934963 is a prime.

It is not a weakly prime, because it can be changed into another prime (18235934921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9117967485 + 9117967486.

It is an arithmetic number, because the mean of its divisors is an integer number (9117967486).

Almost surely, 2^18235934971 is an apocalyptic number.

18235934971 is a deficient number, since it is larger than the sum of its proper divisors (1).

18235934971 is an equidigital number, since it uses as much as digits as its factorization.

18235934971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The spelling of 18235934971 in words is "eighteen billion, two hundred thirty-five million, nine hundred thirty-four thousand, nine hundred seventy-one".