1101036440 has 64 divisors (see below), whose sum is σ = 2834092800. Its totient is φ = 377117568.

The previous prime is 1101036437. The next prime is 1101036449. The reversal of 1101036440 is 446301011.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101036449) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 553127 + ... + 555113.

It is an arithmetic number, because the mean of its divisors is an integer number (44282700).

Almost surely, 2^1101036440 is an apocalyptic number.

1101036440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101036440 is an abundant number, since it is smaller than the sum of its proper divisors (1733056360).

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

1101036440 is a wasteful number, since it uses less digits than its factorization.

1101036440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984 (or 3980 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1101036440 is about 33181.8691456645. The cubic root of 1101036440 is about 1032.6042247150.

Adding to 1101036440 its reverse (446301011), we get a palindrome (1547337451).

The spelling of 1101036440 in words is "one billion, one hundred one million, thirty-six thousand, four hundred forty".