1226740209 has 8 divisors (see below), whose sum is σ = 1635891840. Its totient is φ = 817707696.

The previous prime is 1226740169. The next prime is 1226740211. The reversal of 1226740209 is 9020476221.

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

It is not a de Polignac number, because 1226740209 - 2²⁰ = 1225691633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1226740209.

It is not an unprimeable number, because it can be changed into a prime (1226740219) 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, 2062 + ... + 49575.

It is an arithmetic number, because the mean of its divisors is an integer number (204486480).

Almost surely, 2^1226740209 is an apocalyptic number.

It is an amenable number.

1226740209 is a deficient number, since it is larger than the sum of its proper divisors (409151631).

1226740209 is an equidigital number, since it uses as much as digits as its factorization.

1226740209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59559.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1226740209 is about 35024.8513058942. The cubic root of 1226740209 is about 1070.4939080024.

The spelling of 1226740209 in words is "one billion, two hundred twenty-six million, seven hundred forty thousand, two hundred nine".