41491819 has 2 divisors, whose sum is σ = 41491820. Its totient is φ = 41491818.

The previous prime is 41491817. The next prime is 41491829. The reversal of 41491819 is 91819414.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41491819 - 2¹ = 41491817 is a prime.

It is a super-2 number, since 2×41491819² = 3443142087857522, which contains 22 as substring.

Together with 41491817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (41491811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20745909 + 20745910.

It is an arithmetic number, because the mean of its divisors is an integer number (20745910).

Almost surely, 2^41491819 is an apocalyptic number.

41491819 is a deficient number, since it is larger than the sum of its proper divisors (1).

41491819 is an equidigital number, since it uses as much as digits as its factorization.

41491819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 37.

The square root of 41491819 is about 6441.4143633211. The cubic root of 41491819 is about 346.1950268740.

The spelling of 41491819 in words is "forty-one million, four hundred ninety-one thousand, eight hundred nineteen".