18266534 has 48 divisors (see below), whose sum is σ = 34389360. Its totient is φ = 7213440.

The previous prime is 18266513. The next prime is 18266561. The reversal of 18266534 is 43566281.

Its product of digits (34560) is a multiple of the sum of its prime factors (90).

It is a junction number, because it is equal to n+sod(n) for n = 18266494 and 18266503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1074494 + ... + 1074510.

It is an arithmetic number, because the mean of its divisors is an integer number (716445).

Almost surely, 2^18266534 is an apocalyptic number.

18266534 is a deficient number, since it is larger than the sum of its proper divisors (16122826).

18266534 is a wasteful number, since it uses less digits than its factorization.

18266534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 43 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 18266534 is about 4273.9365928848. The cubic root of 18266534 is about 263.3613561305.

The spelling of 18266534 in words is "eighteen million, two hundred sixty-six thousand, five hundred thirty-four".