1101243264 has 192 divisors, whose sum is σ = 3257467920. Its totient is φ = 329359360.

The previous prime is 1101243239. The next prime is 1101243317. The reversal of 1101243264 is 4623421011.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6365482 + ... + 6365654.

Almost surely, 2^1101243264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101243264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1628733960).

1101243264 is an abundant number, since it is smaller than the sum of its proper divisors (2156224656).

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

1101243264 is a wasteful number, since it uses less digits than its factorization.

1101243264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1101243264 is about 33184.9855205634. The cubic root of 1101243264 is about 1032.6688771210.

Adding to 1101243264 its reverse (4623421011), we get a palindrome (5724664275).

The spelling of 1101243264 in words is "one billion, one hundred one million, two hundred forty-three thousand, two hundred sixty-four".