1100545043 has 16 divisors (see below), whose sum is σ = 1233125376. Its totient is φ = 975330720.

The previous prime is 1100545027. The next prime is 1100545051. The reversal of 1100545043 is 3405450011.

It is not a de Polignac number, because 1100545043 - 2⁴ = 1100545027 is a prime.

It is a super-2 number, since 2×1100545043² = 2422398783343743698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100545013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40430 + ... + 61932.

It is an arithmetic number, because the mean of its divisors is an integer number (77070336).

Almost surely, 2^1100545043 is an apocalyptic number.

1100545043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1100545043 is a deficient number, since it is larger than the sum of its proper divisors (132580333).

1100545043 is a wasteful number, since it uses less digits than its factorization.

1100545043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21674.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1100545043 is about 33174.4637183482. The cubic root of 1100545043 is about 1032.4505833803.

Adding to 1100545043 its reverse (3405450011), we get a palindrome (4505995054).

The spelling of 1100545043 in words is "one billion, one hundred million, five hundred forty-five thousand, forty-three".