19000690381 has 2 divisors, whose sum is σ = 19000690382. Its totient is φ = 19000690380.

The previous prime is 19000690309. The next prime is 19000690417. The reversal of 19000690381 is 18309600091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15053081481 + 3947608900 = 122691^2 + 62830^2 .

It is a cyclic number.

It is not a de Polignac number, because 19000690381 - 2¹⁷ = 19000559309 is a prime.

It is a super-2 number, since 2×19000690381² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19000690381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19000690081) 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, 9500345190 + 9500345191.

It is an arithmetic number, because the mean of its divisors is an integer number (9500345191).

Almost surely, 2^19000690381 is an apocalyptic number.

It is an amenable number.

19000690381 is a deficient number, since it is larger than the sum of its proper divisors (1).

19000690381 is an equidigital number, since it uses as much as digits as its factorization.

19000690381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 19000690381 in words is "nineteen billion, six hundred ninety thousand, three hundred eighty-one".