22981840939 has 2 divisors, whose sum is σ = 22981840940. Its totient is φ = 22981840938.

The previous prime is 22981840919. The next prime is 22981840961. The reversal of 22981840939 is 93904818922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22981840939 - 2¹³ = 22981832747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22981840939.

It is not a weakly prime, because it can be changed into another prime (22981840919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11490920469 + 11490920470.

It is an arithmetic number, because the mean of its divisors is an integer number (11490920470).

Almost surely, 2^22981840939 is an apocalyptic number.

22981840939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22981840939 is an equidigital number, since it uses as much as digits as its factorization.

22981840939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 22981840939 in words is "twenty-two billion, nine hundred eighty-one million, eight hundred forty thousand, nine hundred thirty-nine".