12791818 has 16 divisors (see below), whose sum is σ = 21563136. Its totient is φ = 5646960.

The previous prime is 12791797. The next prime is 12791819. The reversal of 12791818 is 81819721.

It is not an unprimeable number, because it can be changed into a prime (12791819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10098 + ... + 11293.

It is an arithmetic number, because the mean of its divisors is an integer number (1347696).

Almost surely, 2^12791818 is an apocalyptic number.

12791818 is a deficient number, since it is larger than the sum of its proper divisors (8771318).

12791818 is a wasteful number, since it uses less digits than its factorization.

12791818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21429.

The product of its digits is 8064, while the sum is 37.

The square root of 12791818 is about 3576.5651119475. The cubic root of 12791818 is about 233.8715661142.

The spelling of 12791818 in words is "twelve million, seven hundred ninety-one thousand, eight hundred eighteen".