19077807461 has 2 divisors, whose sum is σ = 19077807462. Its totient is φ = 19077807460.

The previous prime is 19077807391. The next prime is 19077807481. The reversal of 19077807461 is 16470877091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17691660100 + 1386147361 = 133010^2 + 37231^2 .

It is a cyclic number.

It is not a de Polignac number, because 19077807461 - 2¹⁰ = 19077806437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19077807481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9538903730 + 9538903731.

It is an arithmetic number, because the mean of its divisors is an integer number (9538903731).

Almost surely, 2^19077807461 is an apocalyptic number.

It is an amenable number.

19077807461 is a deficient number, since it is larger than the sum of its proper divisors (1).

19077807461 is an equidigital number, since it uses as much as digits as its factorization.

19077807461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 592704, while the sum is 50.

The spelling of 19077807461 in words is "nineteen billion, seventy-seven million, eight hundred seven thousand, four hundred sixty-one".