2194187519 has 2 divisors, whose sum is σ = 2194187520. Its totient is φ = 2194187518.

The previous prime is 2194187491. The next prime is 2194187573. The reversal of 2194187519 is 9157814912.

2194187519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2194187519 - 2²⁸ = 1925752063 is a prime.

It is a super-2 number, since 2×2194187519² = 9628917737070750722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194187599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097093759 + 1097093760.

It is an arithmetic number, because the mean of its divisors is an integer number (1097093760).

Almost surely, 2^2194187519 is an apocalyptic number.

2194187519 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194187519 is an equidigital number, since it uses as much as digits as its factorization.

2194187519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 47.

The square root of 2194187519 is about 46842.1553624510. The cubic root of 2194187519 is about 1299.4450331394.

The spelling of 2194187519 in words is "two billion, one hundred ninety-four million, one hundred eighty-seven thousand, five hundred nineteen".