18483691 has 2 divisors, whose sum is σ = 18483692. Its totient is φ = 18483690.

The previous prime is 18483667. The next prime is 18483721. The reversal of 18483691 is 19638481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18483691 - 2¹¹ = 18481643 is a prime.

It is not a weakly prime, because it can be changed into another prime (18483601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9241845 + 9241846.

It is an arithmetic number, because the mean of its divisors is an integer number (9241846).

Almost surely, 2^18483691 is an apocalyptic number.

18483691 is a deficient number, since it is larger than the sum of its proper divisors (1).

18483691 is an equidigital number, since it uses as much as digits as its factorization.

18483691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 18483691 is about 4299.2663327596. The cubic root of 18483691 is about 264.4008821932.

The spelling of 18483691 in words is "eighteen million, four hundred eighty-three thousand, six hundred ninety-one".