18051119 has 2 divisors, whose sum is σ = 18051120. Its totient is φ = 18051118.

The previous prime is 18051107. The next prime is 18051139. The reversal of 18051119 is 91115081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18051119 - 2¹² = 18047023 is a prime.

It is a super-2 number, since 2×18051119² = 651685794304322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18051139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9025559 + 9025560.

It is an arithmetic number, because the mean of its divisors is an integer number (9025560).

Almost surely, 2^18051119 is an apocalyptic number.

18051119 is a deficient number, since it is larger than the sum of its proper divisors (1).

18051119 is an equidigital number, since it uses as much as digits as its factorization.

18051119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 18051119 is about 4248.6608478437. The cubic root of 18051119 is about 262.3219969337.

The spelling of 18051119 in words is "eighteen million, fifty-one thousand, one hundred nineteen".