19157238211 has 16 divisors (see below), whose sum is σ = 19797148800. Its totient is φ = 18527937408.

The previous prime is 19157238203. The next prime is 19157238253. The reversal of 19157238211 is 11283275191.

It is a cyclic number.

It is not a de Polignac number, because 19157238211 - 2³ = 19157238203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19157208211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1988041 + ... + 1997653.

It is an arithmetic number, because the mean of its divisors is an integer number (1237321800).

Almost surely, 2^19157238211 is an apocalyptic number.

19157238211 is a deficient number, since it is larger than the sum of its proper divisors (639910589).

19157238211 is a wasteful number, since it uses less digits than its factorization.

19157238211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10158.

The product of its digits is 30240, while the sum is 40.

The spelling of 19157238211 in words is "nineteen billion, one hundred fifty-seven million, two hundred thirty-eight thousand, two hundred eleven".