9313157989 has 2 divisors, whose sum is σ = 9313157990. Its totient is φ = 9313157988.

The previous prime is 9313157941. The next prime is 9313158013. The reversal of 9313157989 is 9897513139.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9222337089 + 90820900 = 96033^2 + 9530^2 .

It is an emirp because it is prime and its reverse (9897513139) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9313157989 - 2¹¹ = 9313155941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9313157939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4656578994 + 4656578995.

It is an arithmetic number, because the mean of its divisors is an integer number (4656578995).

Almost surely, 2^9313157989 is an apocalyptic number.

It is an amenable number.

9313157989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9313157989 is an equidigital number, since it uses as much as digits as its factorization.

9313157989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1837080, while the sum is 55.

The square root of 9313157989 is about 96504.7044915428. The cubic root of 9313157989 is about 2103.9350246582.

The spelling of 9313157989 in words is "nine billion, three hundred thirteen million, one hundred fifty-seven thousand, nine hundred eighty-nine".