3784135815438 has 32 divisors (see below), whose sum is σ = 8256365700480. Its totient is φ = 1146698187360.

The previous prime is 3784135815437. The next prime is 3784135815451. The reversal of 3784135815438 is 8345185314873.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3784135815431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14029281 + ... + 14296467.

It is an arithmetic number, because the mean of its divisors is an integer number (258011428140).

Almost surely, 2^{3784135815438} is an apocalyptic number.

3784135815438 is an abundant number, since it is smaller than the sum of its proper divisors (4472229885042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3784135815438 is a wasteful number, since it uses less digits than its factorization.

3784135815438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481792.

The product of its digits is 38707200, while the sum is 60.

The spelling of 3784135815438 in words is "three trillion, seven hundred eighty-four billion, one hundred thirty-five million, eight hundred fifteen thousand, four hundred thirty-eight".