2171460787 has 2 divisors, whose sum is σ = 2171460788. Its totient is φ = 2171460786.

The previous prime is 2171460763. The next prime is 2171460799. The reversal of 2171460787 is 7870641712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2171460787 - 2²³ = 2163072179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2171464787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085730393 + 1085730394.

It is an arithmetic number, because the mean of its divisors is an integer number (1085730394).

Almost surely, 2^2171460787 is an apocalyptic number.

2171460787 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171460787 is an equidigital number, since it uses as much as digits as its factorization.

2171460787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 2171460787 is about 46598.9354706736. The cubic root of 2171460787 is about 1294.9430339227.

The spelling of 2171460787 in words is "two billion, one hundred seventy-one million, four hundred sixty thousand, seven hundred eighty-seven".