1101803472 has 400 divisors, whose sum is σ = 4063323264. Its totient is φ = 279936000.

The previous prime is 1101803471. The next prime is 1101803531. The reversal of 1101803472 is 2743081011.

1101803472 is a `hidden beast` number, since 1 + 10 + 180 + 3 + 472 = 666.

It is a super-2 number, since 2×1101803472² = 2427941781822509568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101803471) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6087222 + ... + 6087402.

Almost surely, 2^1101803472 is an apocalyptic number.

1101803472 is a gapful number since it is divisible by the number (12) 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 1101803472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2031661632).

1101803472 is an abundant number, since it is smaller than the sum of its proper divisors (2961519792).

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

1101803472 is a wasteful number, since it uses less digits than its factorization.

1101803472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1101803472 is about 33193.4251320951. The cubic root of 1101803472 is about 1032.8439553912.

Adding to 1101803472 its reverse (2743081011), we get a palindrome (3844884483).

The spelling of 1101803472 in words is "one billion, one hundred one million, eight hundred three thousand, four hundred seventy-two".