1226505536 has 14 divisors (see below), whose sum is σ = 2433847050. Its totient is φ = 613252736.

The previous prime is 1226505523. The next prime is 1226505541. The reversal of 1226505536 is 6355056221.

It can be written as a sum of positive squares in only one way, i.e., 1207145536 + 19360000 = 34744^2 + 4400^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1226505496 and 1226505505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9582011 + ... + 9582138.

Almost surely, 2^1226505536 is an apocalyptic number.

1226505536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1226505536 is a deficient number, since it is larger than the sum of its proper divisors (1207341514).

1226505536 is an equidigital number, since it uses as much as digits as its factorization.

1226505536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19164161 (or 19164151 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 1226505536 is about 35021.5010529246. The cubic root of 1226505536 is about 1070.4256425196.

The spelling of 1226505536 in words is "one billion, two hundred twenty-six million, five hundred five thousand, five hundred thirty-six".