18478468969 has 8 divisors (see below), whose sum is σ = 18566550720. Its totient is φ = 18390446256.

The previous prime is 18478468963. The next prime is 18478468993. The reversal of 18478468969 is 96986487481.

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 18478468969 - 2³ = 18478468961 is a prime.

It is a super-2 number, since 2×18478468969² (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 = 18478468898 and 18478468907.

It is not an unprimeable number, because it can be changed into a prime (18478468961) 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, 692652 + ... + 718834.

It is an arithmetic number, because the mean of its divisors is an integer number (2320818840).

Almost surely, 2^18478468969 is an apocalyptic number.

It is an amenable number.

18478468969 is a deficient number, since it is larger than the sum of its proper divisors (88081751).

18478468969 is a wasteful number, since it uses less digits than its factorization.

18478468969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29519.

The product of its digits is 167215104, while the sum is 70.

The spelling of 18478468969 in words is "eighteen billion, four hundred seventy-eight million, four hundred sixty-eight thousand, nine hundred sixty-nine".