18203609023 has 2 divisors, whose sum is σ = 18203609024. Its totient is φ = 18203609022.

The previous prime is 18203608981. The next prime is 18203609059. The reversal of 18203609023 is 32090630281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18203609023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18203609023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18203609063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9101804511 + 9101804512.

It is an arithmetic number, because the mean of its divisors is an integer number (9101804512).

Almost surely, 2^18203609023 is an apocalyptic number.

18203609023 is a deficient number, since it is larger than the sum of its proper divisors (1).

18203609023 is an equidigital number, since it uses as much as digits as its factorization.

18203609023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 18203609023 in words is "eighteen billion, two hundred three million, six hundred nine thousand, twenty-three".