1226849536 has 72 divisors (see below), whose sum is σ = 2686699008. Its totient is φ = 554496000.

The previous prime is 1226849531. The next prime is 1226849543. The reversal of 1226849536 is 6359486221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226849531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536716 + ... + 538996.

It is an arithmetic number, because the mean of its divisors is an integer number (37315264).

Almost surely, 2^1226849536 is an apocalyptic number.

1226849536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1226849536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1343349504).

1226849536 is an abundant number, since it is smaller than the sum of its proper divisors (1459849472).

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

1226849536 is a wasteful number, since it uses less digits than its factorization.

1226849536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2485 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 1226849536 is about 35026.4119772494. The cubic root of 1226849536 is about 1070.5257078380.

The spelling of 1226849536 in words is "one billion, two hundred twenty-six million, eight hundred forty-nine thousand, five hundred thirty-six".