1226642355 has 12 divisors (see below), whose sum is σ = 2126180160. Its totient is φ = 654209232.

The previous prime is 1226642353. The next prime is 1226642357. The reversal of 1226642355 is 5532466221.

1226642355 is a `hidden beast` number, since 1 + 2 + 2 + 6 + 642 + 3 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1226642353) and next prime (1226642357).

It is not a de Polignac number, because 1226642355 - 2¹ = 1226642353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226642353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13629315 + ... + 13629404.

It is an arithmetic number, because the mean of its divisors is an integer number (177181680).

Almost surely, 2^1226642355 is an apocalyptic number.

1226642355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1226642355 is a deficient number, since it is larger than the sum of its proper divisors (899537805).

1226642355 is a wasteful number, since it uses less digits than its factorization.

1226642355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27258730 (or 27258727 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 1226642355 is about 35023.4543556172. The cubic root of 1226642355 is about 1070.4654437045.

The spelling of 1226642355 in words is "one billion, two hundred twenty-six million, six hundred forty-two thousand, three hundred fifty-five".