18026494 has 16 divisors (see below), whose sum is σ = 28755648. Its totient is φ = 8445952.

The previous prime is 18026471. The next prime is 18026509. The reversal of 18026494 is 49462081.

18026494 = 481² + 482² + ... + 548².

It is a super-4 number, since 4×18026494⁴ (a number of 30 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7707 + ... + 9769.

It is an arithmetic number, because the mean of its divisors is an integer number (1797228).

Almost surely, 2^18026494 is an apocalyptic number.

18026494 is a deficient number, since it is larger than the sum of its proper divisors (10729154).

18026494 is a wasteful number, since it uses less digits than its factorization.

18026494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 18026494 is about 4245.7618868702. The cubic root of 18026494 is about 262.2026577246.

The spelling of 18026494 in words is "eighteen million, twenty-six thousand, four hundred ninety-four".