1226511136 has 48 divisors (see below), whose sum is σ = 2461777920. Its totient is φ = 601413120.

The previous prime is 1226511109. The next prime is 1226511137. The reversal of 1226511136 is 6311156221.

It is not an unprimeable number, because it can be changed into a prime (1226511137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360001 + ... + 363391.

It is an arithmetic number, because the mean of its divisors is an integer number (51287040).

Almost surely, 2^1226511136 is an apocalyptic number.

1226511136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1226511136 is an abundant number, since it is smaller than the sum of its proper divisors (1235266784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226511136 is a wasteful number, since it uses less digits than its factorization.

1226511136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3617 (or 3609 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 1226511136 is about 35021.5810037183. The cubic root of 1226511136 is about 1070.4272716397.

Adding to 1226511136 its reverse (6311156221), we get a palindrome (7537667357).

The spelling of 1226511136 in words is "one billion, two hundred twenty-six million, five hundred eleven thousand, one hundred thirty-six".