2193289687 has 2 divisors, whose sum is σ = 2193289688. Its totient is φ = 2193289686.

The previous prime is 2193289673. The next prime is 2193289699. The reversal of 2193289687 is 7869823912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2193289687 - 2⁷ = 2193289559 is a prime.

It is a super-2 number, since 2×2193289687² = 9621039302201115938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2193289487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096644843 + 1096644844.

It is an arithmetic number, because the mean of its divisors is an integer number (1096644844).

Almost surely, 2^2193289687 is an apocalyptic number.

2193289687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2193289687 is an equidigital number, since it uses as much as digits as its factorization.

2193289687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 2193289687 is about 46832.5707921314. The cubic root of 2193289687 is about 1299.2677704869.

The spelling of 2193289687 in words is "two billion, one hundred ninety-three million, two hundred eighty-nine thousand, six hundred eighty-seven".