17930801309 has 2 divisors, whose sum is σ = 17930801310. Its totient is φ = 17930801308.

The previous prime is 17930801299. The next prime is 17930801321. The reversal of 17930801309 is 90310803971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17339095684 + 591705625 = 131678^2 + 24325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17930801309 is a prime.

It is a super-2 number, since 2×17930801309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17930801209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8965400654 + 8965400655.

It is an arithmetic number, because the mean of its divisors is an integer number (8965400655).

Almost surely, 2^17930801309 is an apocalyptic number.

It is an amenable number.

17930801309 is a deficient number, since it is larger than the sum of its proper divisors (1).

17930801309 is an equidigital number, since it uses as much as digits as its factorization.

17930801309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 17930801309 in words is "seventeen billion, nine hundred thirty million, eight hundred one thousand, three hundred nine".