19249122097 has 4 divisors (see below), whose sum is σ = 19257168420. Its totient is φ = 19241075776.

The previous prime is 19249122077. The next prime is 19249122163. The reversal of 19249122097 is 79022194291.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1367816256 + 17881305841 = 36984^2 + 133721^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19249122097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19249122007) 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, 4019572 + ... + 4024357.

It is an arithmetic number, because the mean of its divisors is an integer number (4814292105).

Almost surely, 2^19249122097 is an apocalyptic number.

It is an amenable number.

19249122097 is a deficient number, since it is larger than the sum of its proper divisors (8046323).

19249122097 is an equidigital number, since it uses as much as digits as its factorization.

19249122097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046322.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 19249122097 in words is "nineteen billion, two hundred forty-nine million, one hundred twenty-two thousand, ninety-seven".