3738884178385 has 4 divisors (see below), whose sum is σ = 4486661014068. Its totient is φ = 2991107342704.

The previous prime is 3738884178377. The next prime is 3738884178397. The reversal of 3738884178385 is 5838714888373.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1468534372561 + 2270349805824 = 1211831^2 + 1506768^2 .

It is a cyclic number.

It is not a de Polignac number, because 3738884178385 - 2³ = 3738884178377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373888417834 + ... + 373888417843.

It is an arithmetic number, because the mean of its divisors is an integer number (1121665253517).

Almost surely, 2^{3738884178385} is an apocalyptic number.

It is an amenable number.

3738884178385 is a deficient number, since it is larger than the sum of its proper divisors (747776835683).

3738884178385 is an equidigital number, since it uses as much as digits as its factorization.

3738884178385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747776835682.

The product of its digits is 867041280, while the sum is 73.

The spelling of 3738884178385 in words is "three trillion, seven hundred thirty-eight billion, eight hundred eighty-four million, one hundred seventy-eight thousand, three hundred eighty-five".