19146857057 has 2 divisors, whose sum is σ = 19146857058. Its totient is φ = 19146857056.

The previous prime is 19146857027. The next prime is 19146857077. The reversal of 19146857057 is 75075864191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19081554496 + 65302561 = 138136^2 + 8081^2 .

It is a cyclic number.

It is not a de Polignac number, because 19146857057 - 2¹⁴ = 19146840673 is a prime.

It is a super-2 number, since 2×19146857057² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19146857027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9573428528 + 9573428529.

It is an arithmetic number, because the mean of its divisors is an integer number (9573428529).

Almost surely, 2^19146857057 is an apocalyptic number.

It is an amenable number.

19146857057 is a deficient number, since it is larger than the sum of its proper divisors (1).

19146857057 is an equidigital number, since it uses as much as digits as its factorization.

19146857057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 53.

The spelling of 19146857057 in words is "nineteen billion, one hundred forty-six million, eight hundred fifty-seven thousand, fifty-seven".