1229265648 has 360 divisors, whose sum is σ = 4178826288. Its totient is φ = 334098432.

The previous prime is 1229265593. The next prime is 1229265673. The reversal of 1229265648 is 8465629221.

It is a super-3 number, since 3×1229265648³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 11488411 + ... + 11488517.

Almost surely, 2^1229265648 is an apocalyptic number.

1229265648 is a gapful number since it is divisible by the number (18) 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 1229265648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2089413144).

1229265648 is an abundant number, since it is smaller than the sum of its proper divisors (2949560640).

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

1229265648 is a wasteful number, since it uses less digits than its factorization.

1229265648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 161 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1229265648 is about 35060.8848718911. The cubic root of 1229265648 is about 1071.2279982338.

The spelling of 1229265648 in words is "one billion, two hundred twenty-nine million, two hundred sixty-five thousand, six hundred forty-eight".