1226166426 has 24 divisors (see below), whose sum is σ = 2690326080. Its totient is φ = 403547976.

The previous prime is 1226166413. The next prime is 1226166433. The reversal of 1226166426 is 6246616221.

1226166426 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 1 + 6 + 642 + 6 = 666.

It is a super-2 number, since 2×1226166426² = 3006968208499226952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429720 + ... + 432563.

It is an arithmetic number, because the mean of its divisors is an integer number (112096920).

Almost surely, 2^1226166426 is an apocalyptic number.

1226166426 is an abundant number, since it is smaller than the sum of its proper divisors (1464159654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226166426 is a wasteful number, since it uses less digits than its factorization.

1226166426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862370 (or 862367 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1226166426 is about 35016.6592638418. The cubic root of 1226166426 is about 1070.3269813265.

It can be divided in two parts, 12261 and 66426, that added together give a palindrome (78687).

The spelling of 1226166426 in words is "one billion, two hundred twenty-six million, one hundred sixty-six thousand, four hundred twenty-six".