1109145043 has 2 divisors, whose sum is σ = 1109145044. Its totient is φ = 1109145042.

The previous prime is 1109144989. The next prime is 1109145047. The reversal of 1109145043 is 3405419011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1109145043 is a prime.

It is a super-2 number, since 2×1109145043² = 2460405452822943698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1109145047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554572521 + 554572522.

It is an arithmetic number, because the mean of its divisors is an integer number (554572522).

Almost surely, 2^1109145043 is an apocalyptic number.

1109145043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109145043 is an equidigital number, since it uses as much as digits as its factorization.

1109145043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1109145043 is about 33303.8292543065. The cubic root of 1109145043 is about 1035.1329048992.

The spelling of 1109145043 in words is "one billion, one hundred nine million, one hundred forty-five thousand, forty-three".