18885483623 has 2 divisors, whose sum is σ = 18885483624. Its totient is φ = 18885483622.

The previous prime is 18885483613. The next prime is 18885483641. The reversal of 18885483623 is 32638458881.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18885483623 - 2⁸ = 18885483367 is a prime.

It is a super-2 number, since 2×18885483623² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18885483613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9442741811 + 9442741812.

It is an arithmetic number, because the mean of its divisors is an integer number (9442741812).

Almost surely, 2^18885483623 is an apocalyptic number.

18885483623 is a deficient number, since it is larger than the sum of its proper divisors (1).

18885483623 is an equidigital number, since it uses as much as digits as its factorization.

18885483623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8847360, while the sum is 56.

The spelling of 18885483623 in words is "eighteen billion, eight hundred eighty-five million, four hundred eighty-three thousand, six hundred twenty-three".