19012439417 has 2 divisors, whose sum is σ = 19012439418. Its totient is φ = 19012439416.

The previous prime is 19012439401. The next prime is 19012439429. The reversal of 19012439417 is 71493421091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17454637456 + 1557801961 = 132116^2 + 39469^2 .

It is a cyclic number.

It is not a de Polignac number, because 19012439417 - 2⁴ = 19012439401 is a prime.

It is a super-2 number, since 2×19012439417² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19012433417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9506219708 + 9506219709.

It is an arithmetic number, because the mean of its divisors is an integer number (9506219709).

Almost surely, 2^19012439417 is an apocalyptic number.

It is an amenable number.

19012439417 is a deficient number, since it is larger than the sum of its proper divisors (1).

19012439417 is an equidigital number, since it uses as much as digits as its factorization.

19012439417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 19012439417 in words is "nineteen billion, twelve million, four hundred thirty-nine thousand, four hundred seventeen".