83745187 has 2 divisors, whose sum is σ = 83745188. Its totient is φ = 83745186.

The previous prime is 83745161. The next prime is 83745191. The reversal of 83745187 is 78154738.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83745187 is a prime.

It is not a weakly prime, because it can be changed into another prime (83745107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41872593 + 41872594.

It is an arithmetic number, because the mean of its divisors is an integer number (41872594).

Almost surely, 2^83745187 is an apocalyptic number.

83745187 is a deficient number, since it is larger than the sum of its proper divisors (1).

83745187 is an equidigital number, since it uses as much as digits as its factorization.

83745187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 43.

The square root of 83745187 is about 9151.2396428025. The cubic root of 83745187 is about 437.5086248096.

The spelling of 83745187 in words is "eighty-three million, seven hundred forty-five thousand, one hundred eighty-seven".