1286226243 has 8 divisors (see below), whose sum is σ = 1905520400. Its totient is φ = 857484144.

The previous prime is 1286226187. The next prime is 1286226257. The reversal of 1286226243 is 3426226821.

1286226243 is a `hidden beast` number, since 1 + 2 + 8 + 6 + 22 + 624 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1286226243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1286226198 and 1286226207.

It is not an unprimeable number, because it can be changed into a prime (1286226143) 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, 23818978 + ... + 23819031.

It is an arithmetic number, because the mean of its divisors is an integer number (238190050).

Almost surely, 2^1286226243 is an apocalyptic number.

1286226243 is a deficient number, since it is larger than the sum of its proper divisors (619294157).

1286226243 is an equidigital number, since it uses as much as digits as its factorization.

1286226243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47638018 (or 47638012 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 1286226243 is about 35863.9964727859. The cubic root of 1286226243 is about 1087.5246814850.

It can be divided in two parts, 1286 and 226243, that added together give a square (227529 = 477²).

The spelling of 1286226243 in words is "one billion, two hundred eighty-six million, two hundred twenty-six thousand, two hundred forty-three".