19085404619 has 2 divisors, whose sum is σ = 19085404620. Its totient is φ = 19085404618.

The previous prime is 19085404609. The next prime is 19085404631. The reversal of 19085404619 is 91640458091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19085404619 - 2³² = 14790437323 is a prime.

It is a super-2 number, since 2×19085404619² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19085404609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9542702309 + 9542702310.

It is an arithmetic number, because the mean of its divisors is an integer number (9542702310).

Almost surely, 2^19085404619 is an apocalyptic number.

19085404619 is a deficient number, since it is larger than the sum of its proper divisors (1).

19085404619 is an equidigital number, since it uses as much as digits as its factorization.

19085404619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 19085404619 in words is "nineteen billion, eighty-five million, four hundred four thousand, six hundred nineteen".