1366779043 has 16 divisors (see below), whose sum is σ = 1577492224. Its totient is φ = 1159984800.

The previous prime is 1366778989. The next prime is 1366779091. The reversal of 1366779043 is 3409776631.

It is a cyclic number.

It is not a de Polignac number, because 1366779043 - 2²¹ = 1364681891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1366778984 and 1366779002.

It is not an unprimeable number, because it can be changed into a prime (1366779643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335368 + ... + 339418.

It is an arithmetic number, because the mean of its divisors is an integer number (98593264).

Almost surely, 2^1366779043 is an apocalyptic number.

1366779043 is a deficient number, since it is larger than the sum of its proper divisors (210713181).

1366779043 is a wasteful number, since it uses less digits than its factorization.

1366779043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 1366779043 is about 36969.9748850334. The cubic root of 1366779043 is about 1109.7694629851.

The spelling of 1366779043 in words is "one billion, three hundred sixty-six million, seven hundred seventy-nine thousand, forty-three".