2172034687 has 2 divisors, whose sum is σ = 2172034688. Its totient is φ = 2172034686.

The previous prime is 2172034679. The next prime is 2172034691. The reversal of 2172034687 is 7864302712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172034687 - 2³ = 2172034679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172034637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086017343 + 1086017344.

It is an arithmetic number, because the mean of its divisors is an integer number (1086017344).

Almost surely, 2^2172034687 is an apocalyptic number.

2172034687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172034687 is an equidigital number, since it uses as much as digits as its factorization.

2172034687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 2172034687 is about 46605.0929298505. The cubic root of 2172034687 is about 1295.0571049589.

The spelling of 2172034687 in words is "two billion, one hundred seventy-two million, thirty-four thousand, six hundred eighty-seven".