2170652009 has 2 divisors, whose sum is σ = 2170652010. Its totient is φ = 2170652008.

The previous prime is 2170651993. The next prime is 2170652119. The reversal of 2170652009 is 9002560712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572360409 + 598291600 = 39653^2 + 24460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2170652009 - 2⁴ = 2170651993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2170652909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085326004 + 1085326005.

It is an arithmetic number, because the mean of its divisors is an integer number (1085326005).

Almost surely, 2^2170652009 is an apocalyptic number.

It is an amenable number.

2170652009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170652009 is an equidigital number, since it uses as much as digits as its factorization.

2170652009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2170652009 is about 46590.2565886903. The cubic root of 2170652009 is about 1294.7822433161.

The spelling of 2170652009 in words is "two billion, one hundred seventy million, six hundred fifty-two thousand, nine".