1233243648 has 480 divisors, whose sum is σ = 4665076416. Its totient is φ = 304349184.

The previous prime is 1233243637. The next prime is 1233243653. The reversal of 1233243648 is 8463423321.

1233243648 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 2 + 4 + 3 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7128490 + ... + 7128662.

Almost surely, 2^1233243648 is an apocalyptic number.

1233243648 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 1233243648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332538208).

1233243648 is an abundant number, since it is smaller than the sum of its proper divisors (3431832768).

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

1233243648 is a wasteful number, since it uses less digits than its factorization.

1233243648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 215 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 1233243648 is about 35117.5689363600. The cubic root of 1233243648 is about 1072.3822799379.

Adding to 1233243648 its reverse (8463423321), we get a palindrome (9696666969).

The spelling of 1233243648 in words is "one billion, two hundred thirty-three million, two hundred forty-three thousand, six hundred forty-eight".