1334806781 has 24 divisors (see below), whose sum is σ = 1695718080. Its totient is φ = 1028364480.

The previous prime is 1334806777. The next prime is 1334806813. The reversal of 1334806781 is 1876084331.

It is not a de Polignac number, because 1334806781 - 2² = 1334806777 is a prime.

It is a super-2 number, since 2×1334806781² = 3563418285207163922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1334809781) 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 in 23 ways as a sum of consecutive naturals, for example, 66530 + ... + 84236.

It is an arithmetic number, because the mean of its divisors is an integer number (70654920).

Almost surely, 2^1334806781 is an apocalyptic number.

1334806781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1334806781 is a deficient number, since it is larger than the sum of its proper divisors (360911299).

1334806781 is a wasteful number, since it uses less digits than its factorization.

1334806781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17825 (or 17814 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1334806781 is about 36535.0076091411. The cubic root of 1334806781 is about 1101.0477017931.

The spelling of 1334806781 in words is "one billion, three hundred thirty-four million, eight hundred six thousand, seven hundred eighty-one".