18494012 has 6 divisors (see below), whose sum is σ = 32364528. Its totient is φ = 9247004.

The previous prime is 18493997. The next prime is 18494033. The reversal of 18494012 is 21049481.

It is a super-2 number, since 2×18494012² = 684056959712288, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 2311748 + ... + 2311755.

It is an arithmetic number, because the mean of its divisors is an integer number (5394088).

Almost surely, 2^18494012 is an apocalyptic number.

It is an amenable number.

18494012 is a deficient number, since it is larger than the sum of its proper divisors (13870516).

18494012 is a wasteful number, since it uses less digits than its factorization.

18494012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623507 (or 4623505 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 18494012 is about 4300.4664863245. The cubic root of 18494012 is about 264.4500854564.

The spelling of 18494012 in words is "eighteen million, four hundred ninety-four thousand, twelve".