18144763853 has 4 divisors (see below), whose sum is σ = 18730078848. Its totient is φ = 17559448860.

The previous prime is 18144763829. The next prime is 18144763883. The reversal of 18144763853 is 35836744181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35836744181 = 7 ⋅5119534883.

It is a cyclic number.

It is not a de Polignac number, because 18144763853 - 2⁶ = 18144763789 is a prime.

It is a super-2 number, since 2×18144763853² (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 (18144763883) 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, 292657451 + ... + 292657512.

It is an arithmetic number, because the mean of its divisors is an integer number (4682519712).

Almost surely, 2^18144763853 is an apocalyptic number.

It is an amenable number.

18144763853 is a deficient number, since it is larger than the sum of its proper divisors (585314995).

18144763853 is an equidigital number, since it uses as much as digits as its factorization.

18144763853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585314994.

The product of its digits is 1935360, while the sum is 50.

The spelling of 18144763853 in words is "eighteen billion, one hundred forty-four million, seven hundred sixty-three thousand, eight hundred fifty-three".