1264805383 has 2 divisors, whose sum is σ = 1264805384. Its totient is φ = 1264805382.

The previous prime is 1264805359. The next prime is 1264805417. The reversal of 1264805383 is 3835084621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264805383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264875383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632402691 + 632402692.

It is an arithmetic number, because the mean of its divisors is an integer number (632402692).

Almost surely, 2^1264805383 is an apocalyptic number.

1264805383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264805383 is an equidigital number, since it uses as much as digits as its factorization.

1264805383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1264805383 is about 35564.1024489583. The cubic root of 1264805383 is about 1081.4536276008.

The spelling of 1264805383 in words is "one billion, two hundred sixty-four million, eight hundred five thousand, three hundred eighty-three".