18463376947 has 8 divisors (see below), whose sum is σ = 18915491952. Its totient is φ = 18011347200.

The previous prime is 18463376933. The next prime is 18463376957. The reversal of 18463376947 is 74967336481.

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 18463376947 - 2⁷ = 18463376819 is a prime.

It is a super-2 number, since 2×18463376947² (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 = 18463376891 and 18463376900.

It is not an unprimeable number, because it can be changed into a prime (18463376927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789243 + ... + 812299.

It is an arithmetic number, because the mean of its divisors is an integer number (2364436494).

Almost surely, 2^18463376947 is an apocalyptic number.

18463376947 is a deficient number, since it is larger than the sum of its proper divisors (452115005).

18463376947 is a wasteful number, since it uses less digits than its factorization.

18463376947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42629.

The product of its digits is 18289152, while the sum is 58.

The spelling of 18463376947 in words is "eighteen billion, four hundred sixty-three million, three hundred seventy-six thousand, nine hundred forty-seven".