18082487923 has 2 divisors, whose sum is σ = 18082487924. Its totient is φ = 18082487922.

The previous prime is 18082487909. The next prime is 18082487993. The reversal of 18082487923 is 32978428081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18082487923 is a prime.

It is not a weakly prime, because it can be changed into another prime (18082487993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9041243961 + 9041243962.

It is an arithmetic number, because the mean of its divisors is an integer number (9041243962).

Almost surely, 2^18082487923 is an apocalyptic number.

18082487923 is a deficient number, since it is larger than the sum of its proper divisors (1).

18082487923 is an equidigital number, since it uses as much as digits as its factorization.

18082487923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 18082487923 in words is "eighteen billion, eighty-two million, four hundred eighty-seven thousand, nine hundred twenty-three".