45186749 has 2 divisors, whose sum is σ = 45186750. Its totient is φ = 45186748.

The previous prime is 45186721. The next prime is 45186751. The reversal of 45186749 is 94768154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45131524 + 55225 = 6718^2 + 235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45186749 is a prime.

Together with 45186751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45186719) 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, 22593374 + 22593375.

It is an arithmetic number, because the mean of its divisors is an integer number (22593375).

Almost surely, 2^45186749 is an apocalyptic number.

It is an amenable number.

45186749 is a deficient number, since it is larger than the sum of its proper divisors (1).

45186749 is an equidigital number, since it uses as much as digits as its factorization.

45186749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 45186749 is about 6722.1089696612. The cubic root of 45186749 is about 356.1806856426.

The spelling of 45186749 in words is "forty-five million, one hundred eighty-six thousand, seven hundred forty-nine".