18601149923 has 2 divisors, whose sum is σ = 18601149924. Its totient is φ = 18601149922.

The previous prime is 18601149911. The next prime is 18601149949. The reversal of 18601149923 is 32994110681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18601149923 - 2⁸ = 18601149667 is a prime.

It is not a weakly prime, because it can be changed into another prime (18601149953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9300574961 + 9300574962.

It is an arithmetic number, because the mean of its divisors is an integer number (9300574962).

Almost surely, 2^18601149923 is an apocalyptic number.

18601149923 is a deficient number, since it is larger than the sum of its proper divisors (1).

18601149923 is an equidigital number, since it uses as much as digits as its factorization.

18601149923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 18601149923 in words is "eighteen billion, six hundred one million, one hundred forty-nine thousand, nine hundred twenty-three".