19002919381 has 2 divisors, whose sum is σ = 19002919382. Its totient is φ = 19002919380.

The previous prime is 19002919373. The next prime is 19002919427. The reversal of 19002919381 is 18391920091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17965113156 + 1037806225 = 134034^2 + 32215^2 .

It is a cyclic number.

It is not a de Polignac number, because 19002919381 - 2³ = 19002919373 is a prime.

It is a super-2 number, since 2×19002919381² (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 (19002916381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9501459690 + 9501459691.

It is an arithmetic number, because the mean of its divisors is an integer number (9501459691).

Almost surely, 2^19002919381 is an apocalyptic number.

It is an amenable number.

19002919381 is a deficient number, since it is larger than the sum of its proper divisors (1).

19002919381 is an equidigital number, since it uses as much as digits as its factorization.

19002919381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 43.

The spelling of 19002919381 in words is "nineteen billion, two million, nine hundred nineteen thousand, three hundred eighty-one".