18649542983 has 2 divisors, whose sum is σ = 18649542984. Its totient is φ = 18649542982.

The previous prime is 18649542911. The next prime is 18649543013. The reversal of 18649542983 is 38924594681.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18649542983 - 2²⁸ = 18381107527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18649541983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9324771491 + 9324771492.

It is an arithmetic number, because the mean of its divisors is an integer number (9324771492).

Almost surely, 2^18649542983 is an apocalyptic number.

18649542983 is a deficient number, since it is larger than the sum of its proper divisors (1).

18649542983 is an equidigital number, since it uses as much as digits as its factorization.

18649542983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 59.

The spelling of 18649542983 in words is "eighteen billion, six hundred forty-nine million, five hundred forty-two thousand, nine hundred eighty-three".