2170501609 has 2 divisors, whose sum is σ = 2170501610. Its totient is φ = 2170501608.

The previous prime is 2170501603. The next prime is 2170501657. The reversal of 2170501609 is 9061050712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2038251609 + 132250000 = 45147^2 + 11500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2170501609 - 2⁵ = 2170501577 is a prime.

It is a super-2 number, since 2×2170501609² = 9422154469343177762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2170501603) 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, 1085250804 + 1085250805.

It is an arithmetic number, because the mean of its divisors is an integer number (1085250805).

Almost surely, 2^2170501609 is an apocalyptic number.

It is an amenable number.

2170501609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170501609 is an equidigital number, since it uses as much as digits as its factorization.

2170501609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 2170501609 is about 46588.6424893450. The cubic root of 2170501609 is about 1294.7523383618.

The spelling of 2170501609 in words is "two billion, one hundred seventy million, five hundred one thousand, six hundred nine".