1268485331 has 2 divisors, whose sum is σ = 1268485332. Its totient is φ = 1268485330.

The previous prime is 1268485289. The next prime is 1268485343. The reversal of 1268485331 is 1335848621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1268485331 is a prime.

It is a super-2 number, since 2×1268485331² = 3218110069924359122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1268415331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634242665 + 634242666.

It is an arithmetic number, because the mean of its divisors is an integer number (634242666).

Almost surely, 2^1268485331 is an apocalyptic number.

1268485331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1268485331 is an equidigital number, since it uses as much as digits as its factorization.

1268485331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 1268485331 is about 35615.8017037382. The cubic root of 1268485331 is about 1082.5014409004.

The spelling of 1268485331 in words is "one billion, two hundred sixty-eight million, four hundred eighty-five thousand, three hundred thirty-one".