2171470747 has 2 divisors, whose sum is σ = 2171470748. Its totient is φ = 2171470746.

The previous prime is 2171470723. The next prime is 2171470753. The reversal of 2171470747 is 7470741712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2171470747 - 2²⁷ = 2037253019 is a prime.

It is not a weakly prime, because it can be changed into another prime (2171470757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085735373 + 1085735374.

It is an arithmetic number, because the mean of its divisors is an integer number (1085735374).

Almost surely, 2^2171470747 is an apocalyptic number.

2171470747 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171470747 is an equidigital number, since it uses as much as digits as its factorization.

2171470747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76832, while the sum is 40.

The square root of 2171470747 is about 46599.0423399451. The cubic root of 2171470747 is about 1294.9450137901.

The spelling of 2171470747 in words is "two billion, one hundred seventy-one million, four hundred seventy thousand, seven hundred forty-seven".