19885310407 has 2 divisors, whose sum is σ = 19885310408. Its totient is φ = 19885310406.

The previous prime is 19885310383. The next prime is 19885310413. The reversal of 19885310407 is 70401358891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19885310407 - 2⁷ = 19885310279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19885310447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9942655203 + 9942655204.

It is an arithmetic number, because the mean of its divisors is an integer number (9942655204).

Almost surely, 2^19885310407 is an apocalyptic number.

19885310407 is a deficient number, since it is larger than the sum of its proper divisors (1).

19885310407 is an equidigital number, since it uses as much as digits as its factorization.

19885310407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 19885310407 in words is "nineteen billion, eight hundred eighty-five million, three hundred ten thousand, four hundred seven".