18052007 has 4 divisors (see below), whose sum is σ = 18674520. Its totient is φ = 17429496.

The previous prime is 18052003. The next prime is 18052009. The reversal of 18052007 is 70025081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70025081 = 7 ⋅10003583.

It is a cyclic number.

It is not a de Polignac number, because 18052007 - 2² = 18052003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18052003) 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, 311213 + ... + 311270.

It is an arithmetic number, because the mean of its divisors is an integer number (4668630).

Almost surely, 2^18052007 is an apocalyptic number.

18052007 is a deficient number, since it is larger than the sum of its proper divisors (622513).

18052007 is an equidigital number, since it uses as much as digits as its factorization.

18052007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622512.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 18052007 is about 4248.7653500752. The cubic root of 18052007 is about 262.3262983865.

Adding to 18052007 its reverse (70025081), we get a palindrome (88077088).

The spelling of 18052007 in words is "eighteen million, fifty-two thousand, seven".