1226290885 has 16 divisors (see below), whose sum is σ = 1536796800. Its totient is φ = 937604800.

The previous prime is 1226290847. The next prime is 1226290909. The reversal of 1226290885 is 5880926221.

It is not a de Polignac number, because 1226290885 - 2⁷ = 1226290757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163191 + ... + 170539.

It is an arithmetic number, because the mean of its divisors is an integer number (96049800).

Almost surely, 2^1226290885 is an apocalyptic number.

It is an amenable number.

1226290885 is a deficient number, since it is larger than the sum of its proper divisors (310505915).

1226290885 is a wasteful number, since it uses less digits than its factorization.

1226290885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8828.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1226290885 is about 35018.4363585812. The cubic root of 1226290885 is about 1070.3631937351.

The spelling of 1226290885 in words is "one billion, two hundred twenty-six million, two hundred ninety thousand, eight hundred eighty-five".