19290911137 has 4 divisors (see below), whose sum is σ = 19306583296. Its totient is φ = 19275238980.

The previous prime is 19290911111. The next prime is 19290911153. The reversal of 19290911137 is 73111909291.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73111909291 = 83 ⋅880866377.

It is a cyclic number.

It is not a de Polignac number, because 19290911137 - 2¹¹ = 19290909089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19290911093 and 19290911102.

It is not an unprimeable number, because it can be changed into a prime (19290911537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7834233 + ... + 7836694.

It is an arithmetic number, because the mean of its divisors is an integer number (4826645824).

Almost surely, 2^19290911137 is an apocalyptic number.

It is an amenable number.

19290911137 is a deficient number, since it is larger than the sum of its proper divisors (15672159).

19290911137 is a wasteful number, since it uses less digits than its factorization.

19290911137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672158.

The product of its (nonzero) digits is 30618, while the sum is 43.

The spelling of 19290911137 in words is "nineteen billion, two hundred ninety million, nine hundred eleven thousand, one hundred thirty-seven".