18146556059 has 4 divisors (see below), whose sum is σ = 18149174400. Its totient is φ = 18143937720.

The previous prime is 18146556049. The next prime is 18146556061. The reversal of 18146556059 is 95065564181.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95065564181 = 7 ⋅13580794883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18146556059 is a prime.

It is a super-2 number, since 2×18146556059² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18146555998 and 18146556016.

It is not an unprimeable number, because it can be changed into a prime (18146556049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298747 + ... + 1312644.

It is an arithmetic number, because the mean of its divisors is an integer number (4537293600).

Almost surely, 2^18146556059 is an apocalyptic number.

18146556059 is a deficient number, since it is larger than the sum of its proper divisors (2618341).

18146556059 is an equidigital number, since it uses as much as digits as its factorization.

18146556059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618340.

The product of its (nonzero) digits is 1296000, while the sum is 50.

The spelling of 18146556059 in words is "eighteen billion, one hundred forty-six million, five hundred fifty-six thousand, fifty-nine".