18064845031 has 4 divisors (see below), whose sum is σ = 19127482992. Its totient is φ = 17002207072.

The previous prime is 18064845013. The next prime is 18064845101. The reversal of 18064845031 is 13054846081.

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 18064845031 - 2¹⁵ = 18064812263 is a prime.

It is a super-2 number, since 2×18064845031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18064842031) 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, 531318955 + ... + 531318988.

It is an arithmetic number, because the mean of its divisors is an integer number (4781870748).

Almost surely, 2^18064845031 is an apocalyptic number.

18064845031 is a deficient number, since it is larger than the sum of its proper divisors (1062637961).

18064845031 is a wasteful number, since it uses less digits than its factorization.

18064845031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062637960.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 18064845031 in words is "eighteen billion, sixty-four million, eight hundred forty-five thousand, thirty-one".