18468842961 has 8 divisors (see below), whose sum is σ = 24681996640. Its totient is φ = 12284125632.

The previous prime is 18468842947. The next prime is 18468842969. The reversal of 18468842961 is 16924886481.

It is a happy number.

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

It is not a de Polignac number, because 18468842961 - 2¹¹ = 18468840913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18468842969) 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, 7107571 + ... + 7110168.

It is an arithmetic number, because the mean of its divisors is an integer number (3085249580).

Almost surely, 2^18468842961 is an apocalyptic number.

It is an amenable number.

18468842961 is a deficient number, since it is larger than the sum of its proper divisors (6213153679).

18468842961 is a wasteful number, since it uses less digits than its factorization.

18468842961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14218175.

The product of its digits is 5308416, while the sum is 57.

The spelling of 18468842961 in words is "eighteen billion, four hundred sixty-eight million, eight hundred forty-two thousand, nine hundred sixty-one".