18115426 has 16 divisors (see below), whose sum is σ = 31130496. Its totient is φ = 7744896.

The previous prime is 18115403. The next prime is 18115441. The reversal of 18115426 is 62451181.

It is a super-2 number, since 2×18115426² = 656337318322952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18115394 and 18115403.

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, 5490 + ... + 8146.

It is an arithmetic number, because the mean of its divisors is an integer number (1945656).

Almost surely, 2^18115426 is an apocalyptic number.

18115426 is a deficient number, since it is larger than the sum of its proper divisors (13015070).

18115426 is a wasteful number, since it uses less digits than its factorization.

18115426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153.

The product of its digits is 1920, while the sum is 28.

The square root of 18115426 is about 4256.2220336820. Note that the first 3 decimals coincide. The cubic root of 18115426 is about 262.6331345819.

The spelling of 18115426 in words is "eighteen million, one hundred fifteen thousand, four hundred twenty-six".