1161106043 has 2 divisors, whose sum is σ = 1161106044. Its totient is φ = 1161106042.

The previous prime is 1161106039. The next prime is 1161106061. The reversal of 1161106043 is 3406011611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161106043 - 2² = 1161106039 is a prime.

It is a super-2 number, since 2×1161106043² = 2696334486182235698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1161106003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580553021 + 580553022.

It is an arithmetic number, because the mean of its divisors is an integer number (580553022).

Almost surely, 2^1161106043 is an apocalyptic number.

1161106043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161106043 is an equidigital number, since it uses as much as digits as its factorization.

1161106043 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1161106043 is about 34075.0061335284. The cubic root of 1161106043 is about 1051.0514163529.

Adding to 1161106043 its reverse (3406011611), we get a palindrome (4567117654).

The spelling of 1161106043 in words is "one billion, one hundred sixty-one million, one hundred six thousand, forty-three".