19922440313 has 2 divisors, whose sum is σ = 19922440314. Its totient is φ = 19922440312.

The previous prime is 19922440309. The next prime is 19922440319. The reversal of 19922440313 is 31304422991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13540347769 + 6382092544 = 116363^2 + 79888^2 .

It is a cyclic number.

It is not a de Polignac number, because 19922440313 - 2² = 19922440309 is a prime.

It is not a weakly prime, because it can be changed into another prime (19922440319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9961220156 + 9961220157.

It is an arithmetic number, because the mean of its divisors is an integer number (9961220157).

Almost surely, 2^19922440313 is an apocalyptic number.

It is an amenable number.

19922440313 is a deficient number, since it is larger than the sum of its proper divisors (1).

19922440313 is an equidigital number, since it uses as much as digits as its factorization.

19922440313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 19922440313 in words is "nineteen billion, nine hundred twenty-two million, four hundred forty thousand, three hundred thirteen".