18436229471 has 8 divisors (see below), whose sum is σ = 20142777600. Its totient is φ = 16734769240.

The previous prime is 18436229443. The next prime is 18436229509. The reversal of 18436229471 is 17492263481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18436229471 - 2⁶ = 18436229407 is a prime.

It is a super-3 number, since 3×18436229471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18436219471) 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 7 ways as a sum of consecutive naturals, for example, 1264391 + ... + 1278888.

It is an arithmetic number, because the mean of its divisors is an integer number (2517847200).

Almost surely, 2^18436229471 is an apocalyptic number.

18436229471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18436229471 is a deficient number, since it is larger than the sum of its proper divisors (1706548129).

18436229471 is a wasteful number, since it uses less digits than its factorization.

18436229471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543949.

The product of its digits is 580608, while the sum is 47.

The spelling of 18436229471 in words is "eighteen billion, four hundred thirty-six million, two hundred twenty-nine thousand, four hundred seventy-one".