17930777009 has 2 divisors, whose sum is σ = 17930777010. Its totient is φ = 17930777008.

The previous prime is 17930776999. The next prime is 17930777017. The reversal of 17930777009 is 90077703971.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12025315600 + 5905461409 = 109660^2 + 76847^2 .

It is a cyclic number.

It is not a de Polignac number, because 17930777009 - 2⁸ = 17930776753 is a prime.

It is not a weakly prime, because it can be changed into another prime (17930777209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8965388504 + 8965388505.

It is an arithmetic number, because the mean of its divisors is an integer number (8965388505).

Almost surely, 2^17930777009 is an apocalyptic number.

It is an amenable number.

17930777009 is a deficient number, since it is larger than the sum of its proper divisors (1).

17930777009 is an equidigital number, since it uses as much as digits as its factorization.

17930777009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583443, while the sum is 50.

The spelling of 17930777009 in words is "seventeen billion, nine hundred thirty million, seven hundred seventy-seven thousand, nine".