18067056019 has 4 divisors (see below), whose sum is σ = 18081205344. Its totient is φ = 18052906696.

The previous prime is 18067056001. The next prime is 18067056031. The reversal of 18067056019 is 91065076081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18067056019 - 2⁵ = 18067055987 is a prime.

It is a super-2 number, since 2×18067056019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18067056079) 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, 7072747 + ... + 7075300.

It is an arithmetic number, because the mean of its divisors is an integer number (4520301336).

Almost surely, 2^18067056019 is an apocalyptic number.

18067056019 is a deficient number, since it is larger than the sum of its proper divisors (14149325).

18067056019 is a wasteful number, since it uses less digits than its factorization.

18067056019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14149324.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 18067056019 in words is "eighteen billion, sixty-seven million, fifty-six thousand, nineteen".