1226613155 has 16 divisors (see below), whose sum is σ = 1564756704. Its totient is φ = 919872000.

The previous prime is 1226613151. The next prime is 1226613169. The reversal of 1226613155 is 5513166221.

It is not a de Polignac number, because 1226613155 - 2² = 1226613151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226613151) 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 15 ways as a sum of consecutive naturals, for example, 7412 + ... + 50081.

It is an arithmetic number, because the mean of its divisors is an integer number (97797294).

Almost surely, 2^1226613155 is an apocalyptic number.

1226613155 is a deficient number, since it is larger than the sum of its proper divisors (338143549).

1226613155 is a wasteful number, since it uses less digits than its factorization.

1226613155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57766.

The product of its digits is 10800, while the sum is 32.

The square root of 1226613155 is about 35023.0374896296. The cubic root of 1226613155 is about 1070.4569495581.

Adding to 1226613155 its reverse (5513166221), we get a palindrome (6739779376).

The spelling of 1226613155 in words is "one billion, two hundred twenty-six million, six hundred thirteen thousand, one hundred fifty-five".