18063494 has 4 divisors (see below), whose sum is σ = 27095244. Its totient is φ = 9031746.

The previous prime is 18063481. The next prime is 18063517. The reversal of 18063494 is 49436081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49436081 = 19 ⋅2601899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4515872 + ... + 4515875.

It is an arithmetic number, because the mean of its divisors is an integer number (6773811).

Almost surely, 2^18063494 is an apocalyptic number.

18063494 is a deficient number, since it is larger than the sum of its proper divisors (9031750).

18063494 is an equidigital number, since it uses as much as digits as its factorization.

18063494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9031749.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18063494 is about 4250.1169395677. The cubic root of 18063494 is about 262.3819284569.

The spelling of 18063494 in words is "eighteen million, sixty-three thousand, four hundred ninety-four".