1366844838 has 32 divisors (see below), whose sum is σ = 2882563200. Its totient is φ = 430886016.

The previous prime is 1366844797. The next prime is 1366844867. The reversal of 1366844838 is 8384486631.

It is a super-2 number, since 2×1366844838² = 3736529622334492488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57493 + ... + 77711.

It is an arithmetic number, because the mean of its divisors is an integer number (90080100).

Almost surely, 2^1366844838 is an apocalyptic number.

1366844838 is an abundant number, since it is smaller than the sum of its proper divisors (1515718362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366844838 is a wasteful number, since it uses less digits than its factorization.

1366844838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20836.

The product of its digits is 2654208, while the sum is 51.

The square root of 1366844838 is about 36970.8647180452. The cubic root of 1366844838 is about 1109.7872703282.

The spelling of 1366844838 in words is "one billion, three hundred sixty-six million, eight hundred forty-four thousand, eight hundred thirty-eight".