1013817689 has 2 divisors, whose sum is σ = 1013817690. Its totient is φ = 1013817688.

The previous prime is 1013817659. The next prime is 1013817731. The reversal of 1013817689 is 9867183101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1013467225 + 350464 = 31835^2 + 592^2 .

It is an emirp because it is prime and its reverse (9867183101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1013817689 - 2⁸ = 1013817433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1013817659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506908844 + 506908845.

It is an arithmetic number, because the mean of its divisors is an integer number (506908845).

Almost surely, 2^1013817689 is an apocalyptic number.

It is an amenable number.

1013817689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013817689 is an equidigital number, since it uses as much as digits as its factorization.

1013817689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1013817689 is about 31840.5039061884. The cubic root of 1013817689 is about 1004.5848434185.

The spelling of 1013817689 in words is "one billion, thirteen million, eight hundred seventeen thousand, six hundred eighty-nine".