3838240308478 has 4 divisors (see below), whose sum is σ = 5757360462720. Its totient is φ = 1919120154238.

The previous prime is 3838240308473. The next prime is 3838240308479. The reversal of 3838240308478 is 8748030428383.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3838240308473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959560077118 + ... + 959560077121.

It is an arithmetic number, because the mean of its divisors is an integer number (1439340115680).

Almost surely, 2^{3838240308478} is an apocalyptic number.

3838240308478 is a deficient number, since it is larger than the sum of its proper divisors (1919120154242).

3838240308478 is a wasteful number, since it uses less digits than its factorization.

3838240308478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919120154241.

The product of its (nonzero) digits is 24772608, while the sum is 58.

The spelling of 3838240308478 in words is "three trillion, eight hundred thirty-eight billion, two hundred forty million, three hundred eight thousand, four hundred seventy-eight".