18350541859 has 4 divisors (see below), whose sum is σ = 19762122016. Its totient is φ = 16938961704.

The previous prime is 18350541827. The next prime is 18350541877. The reversal of 18350541859 is 95814505381.

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 18350541859 - 2⁵ = 18350541827 is a prime.

It is a super-2 number, since 2×18350541859² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18350541889) 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, 705790059 + ... + 705790084.

It is an arithmetic number, because the mean of its divisors is an integer number (4940530504).

Almost surely, 2^18350541859 is an apocalyptic number.

18350541859 is a deficient number, since it is larger than the sum of its proper divisors (1411580157).

18350541859 is a wasteful number, since it uses less digits than its factorization.

18350541859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411580156.

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 18350541859 in words is "eighteen billion, three hundred fifty million, five hundred forty-one thousand, eight hundred fifty-nine".