1265749343 has 2 divisors, whose sum is σ = 1265749344. Its totient is φ = 1265749342.

The previous prime is 1265749337. The next prime is 1265749349. The reversal of 1265749343 is 3439475621.

It is a balanced prime because it is at equal distance from previous prime (1265749337) and next prime (1265749349).

It is a cyclic number.

It is not a de Polignac number, because 1265749343 - 2²⁸ = 997313887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1265749294 and 1265749303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1265749349) 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, 632874671 + 632874672.

It is an arithmetic number, because the mean of its divisors is an integer number (632874672).

Almost surely, 2^1265749343 is an apocalyptic number.

1265749343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1265749343 is an equidigital number, since it uses as much as digits as its factorization.

1265749343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 1265749343 is about 35577.3712210444. The cubic root of 1265749343 is about 1081.7226004991.

The spelling of 1265749343 in words is "one billion, two hundred sixty-five million, seven hundred forty-nine thousand, three hundred forty-three".