8043378541 has 4 divisors (see below), whose sum is σ = 8774594784. Its totient is φ = 7312162300.

The previous prime is 8043378529. The next prime is 8043378557. The reversal of 8043378541 is 1458733408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8043378541 - 2¹¹ = 8043376493 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 (8043378571) 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, 365608105 + ... + 365608126.

It is an arithmetic number, because the mean of its divisors is an integer number (2193648696).

Almost surely, 2^8043378541 is an apocalyptic number.

It is an amenable number.

8043378541 is a deficient number, since it is larger than the sum of its proper divisors (731216243).

8043378541 is a wasteful number, since it uses less digits than its factorization.

8043378541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731216242.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 8043378541 is about 89684.8846852133. The cubic root of 8043378541 is about 2003.6083643548.

The spelling of 8043378541 in words is "eight billion, forty-three million, three hundred seventy-eight thousand, five hundred forty-one".