19901018119 has 2 divisors, whose sum is σ = 19901018120. Its totient is φ = 19901018118.

The previous prime is 19901018113. The next prime is 19901018153. The reversal of 19901018119 is 91181010991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19901018119 - 2⁷ = 19901017991 is a prime.

It is a super-2 number, since 2×19901018119² (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 (19901018113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9950509059 + 9950509060.

It is an arithmetic number, because the mean of its divisors is an integer number (9950509060).

Almost surely, 2^19901018119 is an apocalyptic number.

19901018119 is a deficient number, since it is larger than the sum of its proper divisors (1).

19901018119 is an equidigital number, since it uses as much as digits as its factorization.

19901018119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 40.

The spelling of 19901018119 in words is "nineteen billion, nine hundred one million, eighteen thousand, one hundred nineteen".