18806733 has 12 divisors (see below), whose sum is σ = 29635008. Its totient is φ = 11397960.

The previous prime is 18806731. The next prime is 18806737. The reversal of 18806733 is 33760881.

It is not a de Polignac number, because 18806733 - 2¹ = 18806731 is a prime.

It is a super-2 number, since 2×18806733² = 707386412266578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94885 + ... + 95082.

It is an arithmetic number, because the mean of its divisors is an integer number (2469584).

Almost surely, 2^18806733 is an apocalyptic number.

It is an amenable number.

18806733 is a deficient number, since it is larger than the sum of its proper divisors (10828275).

18806733 is a wasteful number, since it uses less digits than its factorization.

18806733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189984 (or 189981 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 18806733 is about 4336.6730335593. The cubic root of 18806733 is about 265.9323183185.

The spelling of 18806733 in words is "eighteen million, eight hundred six thousand, seven hundred thirty-three".