18061826 has 8 divisors (see below), whose sum is σ = 27144444. Its totient is φ = 9013680.

The previous prime is 18061819. The next prime is 18061829. The reversal of 18061826 is 62816081.

It can be written as a sum of positive squares in 2 ways, for example, as 16410601 + 1651225 = 4051^2 + 1285^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18061792 and 18061801.

It is not an unprimeable number, because it can be changed into a prime (18061829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7265 + ... + 9428.

Almost surely, 2^18061826 is an apocalyptic number.

18061826 is a deficient number, since it is larger than the sum of its proper divisors (9082618).

18061826 is a wasteful number, since it uses less digits than its factorization.

18061826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17236.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 18061826 is about 4249.9207051426. The cubic root of 18061826 is about 262.3738520104.

The spelling of 18061826 in words is "eighteen million, sixty-one thousand, eight hundred twenty-six".