1818190063 has 4 divisors (see below), whose sum is σ = 1818302440. Its totient is φ = 1818077688.

The previous prime is 1818190013. The next prime is 1818190067. The reversal of 1818190063 is 3600918181.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1818190063 - 2⁹ = 1818189551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818190067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26793 + ... + 65986.

It is an arithmetic number, because the mean of its divisors is an integer number (454575610).

Almost surely, 2^1818190063 is an apocalyptic number.

1818190063 is a deficient number, since it is larger than the sum of its proper divisors (112377).

1818190063 is an equidigital number, since it uses as much as digits as its factorization.

1818190063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112376.

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

The square root of 1818190063 is about 42640.2399500753. The cubic root of 1818190063 is about 1220.5242893482.

The spelling of 1818190063 in words is "one billion, eight hundred eighteen million, one hundred ninety thousand, sixty-three".