19893974119 has 2 divisors, whose sum is σ = 19893974120. Its totient is φ = 19893974118.

The previous prime is 19893974101. The next prime is 19893974137. The reversal of 19893974119 is 91147939891.

It is a balanced prime because it is at equal distance from previous prime (19893974101) and next prime (19893974137).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19893974119 is a prime.

It is a super-2 number, since 2×19893974119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19893974179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9946987059 + 9946987060.

It is an arithmetic number, because the mean of its divisors is an integer number (9946987060).

Almost surely, 2^19893974119 is an apocalyptic number.

19893974119 is a deficient number, since it is larger than the sum of its proper divisors (1).

19893974119 is an equidigital number, since it uses as much as digits as its factorization.

19893974119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 61.

The spelling of 19893974119 in words is "nineteen billion, eight hundred ninety-three million, nine hundred seventy-four thousand, one hundred nineteen".