1226655273 has 8 divisors (see below), whose sum is σ = 1638820000. Its totient is φ = 816130368.

The previous prime is 1226655239. The next prime is 1226655277. The reversal of 1226655273 is 3725566221.

It is a happy number.

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

It is not a de Polignac number, because 1226655273 - 2⁹ = 1226654761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226655277) 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, 408208 + ... + 411201.

It is an arithmetic number, because the mean of its divisors is an integer number (204852500).

Almost surely, 2^1226655273 is an apocalyptic number.

It is an amenable number.

1226655273 is a deficient number, since it is larger than the sum of its proper divisors (412164727).

1226655273 is an equidigital number, since it uses as much as digits as its factorization.

1226655273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819911.

The product of its digits is 151200, while the sum is 39.

The square root of 1226655273 is about 35023.6387744049. The cubic root of 1226655273 is about 1070.4692014485.

The spelling of 1226655273 in words is "one billion, two hundred twenty-six million, six hundred fifty-five thousand, two hundred seventy-three".