9481998143 has 4 divisors (see below), whose sum is σ = 9522693648. Its totient is φ = 9441302640.

The previous prime is 9481998131. The next prime is 9481998167. The reversal of 9481998143 is 3418991849.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9481998143 - 2¹² = 9481994047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9481991143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20347403 + ... + 20347868.

It is an arithmetic number, because the mean of its divisors is an integer number (2380673412).

Almost surely, 2^9481998143 is an apocalyptic number.

9481998143 is a deficient number, since it is larger than the sum of its proper divisors (40695505).

9481998143 is a wasteful number, since it uses less digits than its factorization.

9481998143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40695504.

The product of its digits is 2239488, while the sum is 56.

The square root of 9481998143 is about 97375.5520805916. The cubic root of 9481998143 is about 2116.5731797455.

The spelling of 9481998143 in words is "nine billion, four hundred eighty-one million, nine hundred ninety-eight thousand, one hundred forty-three".