19089872041 has 2 divisors, whose sum is σ = 19089872042. Its totient is φ = 19089872040.

The previous prime is 19089871993. The next prime is 19089872057. The reversal of 19089872041 is 14027898091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19016410000 + 73462041 = 137900^2 + 8571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19089872041 is a prime.

It is not a weakly prime, because it can be changed into another prime (19089872141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9544936020 + 9544936021.

It is an arithmetic number, because the mean of its divisors is an integer number (9544936021).

Almost surely, 2^19089872041 is an apocalyptic number.

It is an amenable number.

19089872041 is a deficient number, since it is larger than the sum of its proper divisors (1).

19089872041 is an equidigital number, since it uses as much as digits as its factorization.

19089872041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 49.

The spelling of 19089872041 in words is "nineteen billion, eighty-nine million, eight hundred seventy-two thousand, forty-one".