1366799811 has 16 divisors (see below), whose sum is σ = 1963342080. Its totient is φ = 840782880.

The previous prime is 1366799807. The next prime is 1366799831. The reversal of 1366799811 is 1189976631.

It is not a de Polignac number, because 1366799811 - 2² = 1366799807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366799801) 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, 131130 + ... + 141168.

It is an arithmetic number, because the mean of its divisors is an integer number (122708880).

Almost surely, 2^1366799811 is an apocalyptic number.

1366799811 is a deficient number, since it is larger than the sum of its proper divisors (596542269).

1366799811 is a wasteful number, since it uses less digits than its factorization.

1366799811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13546.

The product of its digits is 489888, while the sum is 51.

The square root of 1366799811 is about 36970.2557605435. The cubic root of 1366799811 is about 1109.7750838827.

The spelling of 1366799811 in words is "one billion, three hundred sixty-six million, seven hundred ninety-nine thousand, eight hundred eleven".