3547978743 has 4 divisors (see below), whose sum is σ = 4730638328. Its totient is φ = 2365319160.

The previous prime is 3547978741. The next prime is 3547978751. The reversal of 3547978743 is 3478797453.

It is a happy number.

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

It is not a de Polignac number, because 3547978743 - 2¹ = 3547978741 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 (3547978741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591329788 + ... + 591329793.

It is an arithmetic number, because the mean of its divisors is an integer number (1182659582).

Almost surely, 2^3547978743 is an apocalyptic number.

3547978743 is a deficient number, since it is larger than the sum of its proper divisors (1182659585).

3547978743 is a wasteful number, since it uses less digits than its factorization.

3547978743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182659584.

The product of its digits is 17781120, while the sum is 57.

The square root of 3547978743 is about 59564.9120120226. The cubic root of 3547978743 is about 1525.2007250614.

The spelling of 3547978743 in words is "three billion, five hundred forty-seven million, nine hundred seventy-eight thousand, seven hundred forty-three".