7919243543 has 4 divisors (see below), whose sum is σ = 7942743120. Its totient is φ = 7895743968.

The previous prime is 7919243417. The next prime is 7919243557. The reversal of 7919243543 is 3453429197.

It is a happy number.

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 7919243543 - 2¹⁰ = 7919242519 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 (7919243573) 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 3 ways as a sum of consecutive naturals, for example, 11749283 + ... + 11749956.

It is an arithmetic number, because the mean of its divisors is an integer number (1985685780).

Almost surely, 2^7919243543 is an apocalyptic number.

7919243543 is a deficient number, since it is larger than the sum of its proper divisors (23499577).

7919243543 is a wasteful number, since it uses less digits than its factorization.

7919243543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23499576.

The product of its digits is 816480, while the sum is 47.

The square root of 7919243543 is about 88990.1317169494. The cubic root of 7919243543 is about 1993.2475229339.

The spelling of 7919243543 in words is "seven billion, nine hundred nineteen million, two hundred forty-three thousand, five hundred forty-three".