18106933 has 8 divisors (see below), whose sum is σ = 20172600. Its totient is φ = 16137408.

The previous prime is 18106909. The next prime is 18106939. The reversal of 18106933 is 33960181.

It can be written as a sum of positive squares in 4 ways, for example, as 743044 + 17363889 = 862^2 + 4167^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 18106933 - 2⁵ = 18106901 is a prime.

It is a super-2 number, since 2×18106933² = 655722045332978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18106895 and 18106904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18106939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23638 + ... + 24391.

It is an arithmetic number, because the mean of its divisors is an integer number (2521575).

Almost surely, 2^18106933 is an apocalyptic number.

18106933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18106933 is a deficient number, since it is larger than the sum of its proper divisors (2065667).

18106933 is a wasteful number, since it uses less digits than its factorization.

18106933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48071.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 18106933 is about 4255.2242009088. The cubic root of 18106933 is about 262.5920850019.

The spelling of 18106933 in words is "eighteen million, one hundred six thousand, nine hundred thirty-three".