18454665471 has 8 divisors (see below), whose sum is σ = 26843149824. Its totient is φ = 11184645720.

The previous prime is 18454665433. The next prime is 18454665473. The reversal of 18454665471 is 17456645481.

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

It is not a de Polignac number, because 18454665471 - 2²¹ = 18452568319 is a prime.

It is a super-4 number, since 4×18454665471⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18454665473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279616111 + ... + 279616176.

It is an arithmetic number, because the mean of its divisors is an integer number (3355393728).

Almost surely, 2^18454665471 is an apocalyptic number.

18454665471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18454665471 is a deficient number, since it is larger than the sum of its proper divisors (8388484353).

18454665471 is a wasteful number, since it uses less digits than its factorization.

18454665471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559232301.

The product of its digits is 3225600, while the sum is 51.

The spelling of 18454665471 in words is "eighteen billion, four hundred fifty-four million, six hundred sixty-five thousand, four hundred seventy-one".