1098838717 has 2 divisors, whose sum is σ = 1098838718. Its totient is φ = 1098838716.

The previous prime is 1098838693. The next prime is 1098838721. The reversal of 1098838717 is 7178388901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1064977956 + 33860761 = 32634^2 + 5819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098838717 - 2¹⁵ = 1098805949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098838787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549419358 + 549419359.

It is an arithmetic number, because the mean of its divisors is an integer number (549419359).

Almost surely, 2^1098838717 is an apocalyptic number.

It is an amenable number.

1098838717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098838717 is an equidigital number, since it uses as much as digits as its factorization.

1098838717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 52.

The square root of 1098838717 is about 33148.7362805884. The cubic root of 1098838717 is about 1031.9167241083.

The spelling of 1098838717 in words is "one billion, ninety-eight million, eight hundred thirty-eight thousand, seven hundred seventeen".