1366838847 has 64 divisors (see below), whose sum is σ = 2252275200. Its totient is φ = 812367360.

The previous prime is 1366838833. The next prime is 1366838857. The reversal of 1366838847 is 7488386631.

It is not a de Polignac number, because 1366838847 - 2⁸ = 1366838591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1366838793 and 1366838802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366838857) 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 in 63 ways as a sum of consecutive naturals, for example, 4664833 + ... + 4665125.

It is an arithmetic number, because the mean of its divisors is an integer number (35191800).

Almost surely, 2^1366838847 is an apocalyptic number.

1366838847 is a deficient number, since it is larger than the sum of its proper divisors (885436353).

1366838847 is a wasteful number, since it uses less digits than its factorization.

1366838847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 559 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 1366838847 is about 36970.7836946960. The cubic root of 1366838847 is about 1109.7856488944.

It can be divided in two parts, 136683 and 8847, that added together give a triangular number (145530 = T₅₃₉).

The spelling of 1366838847 in words is "one billion, three hundred sixty-six million, eight hundred thirty-eight thousand, eight hundred forty-seven".