19875327331 has 2 divisors, whose sum is σ = 19875327332. Its totient is φ = 19875327330.

The previous prime is 19875327323. The next prime is 19875327347. The reversal of 19875327331 is 13372357891.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19875327331 - 2³ = 19875327323 is a prime.

It is a super-2 number, since 2×19875327331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19875327371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9937663665 + 9937663666.

It is an arithmetic number, because the mean of its divisors is an integer number (9937663666).

Almost surely, 2^19875327331 is an apocalyptic number.

19875327331 is a deficient number, since it is larger than the sum of its proper divisors (1).

19875327331 is an equidigital number, since it uses as much as digits as its factorization.

19875327331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 49.

The spelling of 19875327331 in words is "nineteen billion, eight hundred seventy-five million, three hundred twenty-seven thousand, three hundred thirty-one".