1101533972 has 96 divisors (see below), whose sum is σ = 2577899520. Its totient is φ = 398661120.

The previous prime is 1101533947. The next prime is 1101534001. The reversal of 1101533972 is 2793351011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412313 + ... + 414975.

It is an arithmetic number, because the mean of its divisors is an integer number (26853120).

Almost surely, 2^1101533972 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 1101533972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288949760).

1101533972 is an abundant number, since it is smaller than the sum of its proper divisors (1476365548).

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

1101533972 is a wasteful number, since it uses less digits than its factorization.

1101533972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 1101533972 is about 33189.3653449414. The cubic root of 1101533972 is about 1032.7597376667.

Adding to 1101533972 its reverse (2793351011), we get a palindrome (3894884983).

The spelling of 1101533972 in words is "one billion, one hundred one million, five hundred thirty-three thousand, nine hundred seventy-two".