18395494 has 16 divisors (see below), whose sum is σ = 29993040. Its totient is φ = 8411040.

The previous prime is 18395473. The next prime is 18395527. The reversal of 18395494 is 49459381.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18395494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412 + ... + 6079.

It is an arithmetic number, because the mean of its divisors is an integer number (1874565).

Almost surely, 2^18395494 is an apocalyptic number.

18395494 is a deficient number, since it is larger than the sum of its proper divisors (11597546).

18395494 is a wasteful number, since it uses less digits than its factorization.

18395494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615.

The product of its digits is 155520, while the sum is 43.

The square root of 18395494 is about 4288.9968524120. The cubic root of 18395494 is about 263.9796720650.

The spelling of 18395494 in words is "eighteen million, three hundred ninety-five thousand, four hundred ninety-four".