1336938778 has 16 divisors (see below), whose sum is σ = 2315525184. Its totient is φ = 567066240.

The previous prime is 1336938751. The next prime is 1336938809. The reversal of 1336938778 is 8778396331.

It is a super-2 number, since 2×1336938778² = 3574810592240266568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490888 + ... + 493603.

It is an arithmetic number, because the mean of its divisors is an integer number (144720324).

Almost surely, 2^1336938778 is an apocalyptic number.

1336938778 is a deficient number, since it is larger than the sum of its proper divisors (978586406).

1336938778 is an equidigital number, since it uses as much as digits as its factorization.

1336938778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984597.

The product of its digits is 4572288, while the sum is 55.

The square root of 1336938778 is about 36564.1734215338. The cubic root of 1336938778 is about 1101.6335997525.

The spelling of 1336938778 in words is "one billion, three hundred thirty-six million, nine hundred thirty-eight thousand, seven hundred seventy-eight".