18495482251 has 4 divisors (see below), whose sum is σ = 18499857904. Its totient is φ = 18491106600.

The previous prime is 18495482237. The next prime is 18495482273. The reversal of 18495482251 is 15228459481.

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: 15228459481 = 41 ⋅371425841.

It is a cyclic number.

It is not a de Polignac number, because 18495482251 - 2⁵ = 18495482219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18495482195 and 18495482204.

It is not an unprimeable number, because it can be changed into a prime (18495482051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181480 + ... + 2189941.

It is an arithmetic number, because the mean of its divisors is an integer number (4624964476).

Almost surely, 2^18495482251 is an apocalyptic number.

18495482251 is a deficient number, since it is larger than the sum of its proper divisors (4375653).

18495482251 is an equidigital number, since it uses as much as digits as its factorization.

18495482251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375652.

The product of its digits is 921600, while the sum is 49.

The spelling of 18495482251 in words is "eighteen billion, four hundred ninety-five million, four hundred eighty-two thousand, two hundred fifty-one".