1226627649 has 24 divisors (see below), whose sum is σ = 1919823360. Its totient is φ = 750205152.

The previous prime is 1226627629. The next prime is 1226627653. The reversal of 1226627649 is 9467266221.

1226627649 is a `hidden beast` number, since 12 + 2 + 6 + 627 + 6 + 4 + 9 = 666.

It is not a de Polignac number, because 1226627649 - 2⁵ = 1226627617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226627629) 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 23 ways as a sum of consecutive naturals, for example, 13089 + ... + 51230.

It is an arithmetic number, because the mean of its divisors is an integer number (79992640).

Almost surely, 2^1226627649 is an apocalyptic number.

It is an amenable number.

1226627649 is a deficient number, since it is larger than the sum of its proper divisors (693195711).

1226627649 is a wasteful number, since it uses less digits than its factorization.

1226627649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64501 (or 64498 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 1226627649 is about 35023.2444099629. The cubic root of 1226627649 is about 1070.4611658132.

The spelling of 1226627649 in words is "one billion, two hundred twenty-six million, six hundred twenty-seven thousand, six hundred forty-nine".