1310193389 has 2 divisors, whose sum is σ = 1310193390. Its totient is φ = 1310193388.

The previous prime is 1310193371. The next prime is 1310193397. The reversal of 1310193389 is 9833910131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1259185225 + 51008164 = 35485^2 + 7142^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310193389 - 2¹⁶ = 1310127853 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310198389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655096694 + 655096695.

It is an arithmetic number, because the mean of its divisors is an integer number (655096695).

Almost surely, 2^1310193389 is an apocalyptic number.

It is an amenable number.

1310193389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310193389 is an equidigital number, since it uses as much as digits as its factorization.

1310193389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 1310193389 is about 36196.5936104490. The cubic root of 1310193389 is about 1094.2380217637.

The spelling of 1310193389 in words is "one billion, three hundred ten million, one hundred ninety-three thousand, three hundred eighty-nine".