18868033 has 4 divisors (see below), whose sum is σ = 18906048. Its totient is φ = 18830020.

The previous prime is 18868021. The next prime is 18868043. The reversal of 18868033 is 33086881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33086881 = 163 ⋅202987.

It is a cyclic number.

It is not a de Polignac number, because 18868033 - 2⁵ = 18868001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18867983 and 18868001.

It is not an unprimeable number, because it can be changed into a prime (18868043) 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, 18253 + ... + 19258.

It is an arithmetic number, because the mean of its divisors is an integer number (4726512).

Almost surely, 2^18868033 is an apocalyptic number.

It is an amenable number.

18868033 is a deficient number, since it is larger than the sum of its proper divisors (38015).

18868033 is an equidigital number, since it uses as much as digits as its factorization.

18868033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38014.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 18868033 is about 4343.7349136429. The cubic root of 18868033 is about 266.2209378522.

The spelling of 18868033 in words is "eighteen million, eight hundred sixty-eight thousand, thirty-three".