113405189 has 2 divisors, whose sum is σ = 113405190. Its totient is φ = 113405188.

The previous prime is 113405183. The next prime is 113405209. The reversal of 113405189 is 981504311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78180964 + 35224225 = 8842^2 + 5935^2 .

It is an emirp because it is prime and its reverse (981504311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113405189 - 2⁸ = 113404933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113405183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56702594 + 56702595.

It is an arithmetic number, because the mean of its divisors is an integer number (56702595).

Almost surely, 2^113405189 is an apocalyptic number.

It is an amenable number.

113405189 is a deficient number, since it is larger than the sum of its proper divisors (1).

113405189 is an equidigital number, since it uses as much as digits as its factorization.

113405189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 113405189 is about 10649.1872459827. The cubic root of 113405189 is about 484.0359764825.

The spelling of 113405189 in words is "one hundred thirteen million, four hundred five thousand, one hundred eighty-nine".