19195000557 has 4 divisors (see below), whose sum is σ = 25593334080. Its totient is φ = 12796667036.

The previous prime is 19195000537. The next prime is 19195000567. The reversal of 19195000557 is 75500059191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19195000557 - 2¹⁴ = 19194984173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19195000537) 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 in 3 ways as a sum of consecutive naturals, for example, 3199166757 + ... + 3199166762.

It is an arithmetic number, because the mean of its divisors is an integer number (6398333520).

Almost surely, 2^19195000557 is an apocalyptic number.

It is an amenable number.

19195000557 is a deficient number, since it is larger than the sum of its proper divisors (6398333523).

19195000557 is an equidigital number, since it uses as much as digits as its factorization.

19195000557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6398333522.

The product of its (nonzero) digits is 70875, while the sum is 42.

The spelling of 19195000557 in words is "nineteen billion, one hundred ninety-five million, five hundred fifty-seven", and thus it is an aban number.