1226891733 has 8 divisors (see below), whose sum is σ = 1636017600. Its totient is φ = 817846848.

The previous prime is 1226891711. The next prime is 1226891741. The reversal of 1226891733 is 3371986221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1226891733 - 2²¹ = 1224794581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226891773) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 47373 + ... + 68541.

It is an arithmetic number, because the mean of its divisors is an integer number (204502200).

Almost surely, 2^1226891733 is an apocalyptic number.

It is an amenable number.

1226891733 is a deficient number, since it is larger than the sum of its proper divisors (409125867).

1226891733 is a wasteful number, since it uses less digits than its factorization.

1226891733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40491.

The product of its digits is 108864, while the sum is 42.

The square root of 1226891733 is about 35027.0143317982. The cubic root of 1226891733 is about 1070.5379811320.

The spelling of 1226891733 in words is "one billion, two hundred twenty-six million, eight hundred ninety-one thousand, seven hundred thirty-three".