1011166043 has 6 divisors (see below), whose sum is σ = 1057041804. Its totient is φ = 967201796.

The previous prime is 1011166021. The next prime is 1011166061. The reversal of 1011166043 is 3406611101.

It is not a de Polignac number, because 1011166043 - 2⁶ = 1011165979 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011166003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 955205 + ... + 956262.

It is an arithmetic number, because the mean of its divisors is an integer number (176173634).

Almost surely, 2^1011166043 is an apocalyptic number.

1011166043 is a deficient number, since it is larger than the sum of its proper divisors (45875761).

1011166043 is an equidigital number, since it uses as much as digits as its factorization.

1011166043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911513 (or 1911490 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1011166043 is about 31798.8371328261. The cubic root of 1011166043 is about 1003.7082462456.

Adding to 1011166043 its reverse (3406611101), we get a palindrome (4417777144).

The spelling of 1011166043 in words is "one billion, eleven million, one hundred sixty-six thousand, forty-three".