43194113 has 4 divisors (see below), whose sum is σ = 43714608. Its totient is φ = 42673620.

The previous prime is 43194101. The next prime is 43194131. The reversal of 43194113 is 31149134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43194113 - 2¹⁰ = 43193089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43194413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260123 + ... + 260288.

It is an arithmetic number, because the mean of its divisors is an integer number (10928652).

Almost surely, 2^43194113 is an apocalyptic number.

It is an amenable number.

43194113 is a deficient number, since it is larger than the sum of its proper divisors (520495).

43194113 is an equidigital number, since it uses as much as digits as its factorization.

43194113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520494.

The product of its digits is 1296, while the sum is 26.

The square root of 43194113 is about 6572.2228355405. Note that the first 3 decimals coincide. The cubic root of 43194113 is about 350.8661892574.

The spelling of 43194113 in words is "forty-three million, one hundred ninety-four thousand, one hundred thirteen".