1226891793 has 16 divisors (see below), whose sum is σ = 1654337216. Its totient is φ = 808704000.

The previous prime is 1226891773. The next prime is 1226891837. The reversal of 1226891793 is 3971986221.

It is not a de Polignac number, because 1226891793 - 2²⁵ = 1193337361 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226891773) 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, 543918 + ... + 546168.

It is an arithmetic number, because the mean of its divisors is an integer number (103396076).

Almost surely, 2^1226891793 is an apocalyptic number.

It is an amenable number.

1226891793 is a deficient number, since it is larger than the sum of its proper divisors (427445423).

1226891793 is a wasteful number, since it uses less digits than its factorization.

1226891793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224.

The product of its digits is 326592, while the sum is 48.

The square root of 1226891793 is about 35027.0151882800. The cubic root of 1226891793 is about 1070.5379985833.

The spelling of 1226891793 in words is "one billion, two hundred twenty-six million, eight hundred ninety-one thousand, seven hundred ninety-three".