19077119989 has 2 divisors, whose sum is σ = 19077119990. Its totient is φ = 19077119988.

The previous prime is 19077119983. The next prime is 19077120017. The reversal of 19077119989 is 98991177091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13963439889 + 5113680100 = 118167^2 + 71510^2 .

It is an emirp because it is prime and its reverse (98991177091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19077119989 - 2³ = 19077119981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19077119981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9538559994 + 9538559995.

It is an arithmetic number, because the mean of its divisors is an integer number (9538559995).

Almost surely, 2^19077119989 is an apocalyptic number.

It is an amenable number.

19077119989 is a deficient number, since it is larger than the sum of its proper divisors (1).

19077119989 is an equidigital number, since it uses as much as digits as its factorization.

19077119989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2571912, while the sum is 61.

The spelling of 19077119989 in words is "nineteen billion, seventy-seven million, one hundred nineteen thousand, nine hundred eighty-nine".