18446830939 has 2 divisors, whose sum is σ = 18446830940. Its totient is φ = 18446830938.

The previous prime is 18446830877. The next prime is 18446830949. The reversal of 18446830939 is 93903864481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18446830939 - 2²³ = 18438442331 is a prime.

It is a super-4 number, since 4×18446830939⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18446830939.

It is not a weakly prime, because it can be changed into another prime (18446830949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9223415469 + 9223415470.

It is an arithmetic number, because the mean of its divisors is an integer number (9223415470).

Almost surely, 2^18446830939 is an apocalyptic number.

18446830939 is a deficient number, since it is larger than the sum of its proper divisors (1).

18446830939 is an equidigital number, since it uses as much as digits as its factorization.

18446830939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 18446830939 in words is "eighteen billion, four hundred forty-six million, eight hundred thirty thousand, nine hundred thirty-nine".