1351968613 has 2 divisors, whose sum is σ = 1351968614. Its totient is φ = 1351968612.

The previous prime is 1351968599. The next prime is 1351968649. The reversal of 1351968613 is 3168691531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1143657124 + 208311489 = 33818^2 + 14433^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351968613 - 2¹⁷ = 1351837541 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1351968613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351918613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675984306 + 675984307.

It is an arithmetic number, because the mean of its divisors is an integer number (675984307).

Almost surely, 2^1351968613 is an apocalyptic number.

It is an amenable number.

1351968613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351968613 is an equidigital number, since it uses as much as digits as its factorization.

1351968613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 1351968613 is about 36769.1258122899. The cubic root of 1351968613 is about 1105.7464058818.

The spelling of 1351968613 in words is "one billion, three hundred fifty-one million, nine hundred sixty-eight thousand, six hundred thirteen".