19157276245 has 4 divisors (see below), whose sum is σ = 22988731500. Its totient is φ = 15325820992.

The previous prime is 19157276191. The next prime is 19157276263. The reversal of 19157276245 is 54267275191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54267275191 = 1637 ⋅33150443.

It can be written as a sum of positive squares in 2 ways, for example, as 2816000356 + 16341275889 = 53066^2 + 127833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19157276245 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1915727620 + ... + 1915727629.

It is an arithmetic number, because the mean of its divisors is an integer number (5747182875).

Almost surely, 2^19157276245 is an apocalyptic number.

It is an amenable number.

19157276245 is a deficient number, since it is larger than the sum of its proper divisors (3831455255).

19157276245 is an equidigital number, since it uses as much as digits as its factorization.

19157276245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831455254.

The product of its digits is 1058400, while the sum is 49.

The spelling of 19157276245 in words is "nineteen billion, one hundred fifty-seven million, two hundred seventy-six thousand, two hundred forty-five".