3854388142081 has 4 divisors (see below), whose sum is σ = 3854400247552. Its totient is φ = 3854376036612.

The previous prime is 3854388142001. The next prime is 3854388142127. The reversal of 3854388142081 is 1802418834583.

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 a de Polignac number, because none of the positive numbers 2^k-3854388142081 is a prime.

It is a super-2 number, since 2×3854388142081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3854388142001) 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, 5561865 + ... + 6216358.

It is an arithmetic number, because the mean of its divisors is an integer number (963600061888).

Almost surely, 2^{3854388142081} is an apocalyptic number.

It is an amenable number.

3854388142081 is a deficient number, since it is larger than the sum of its proper divisors (12105471).

3854388142081 is a wasteful number, since it uses less digits than its factorization.

3854388142081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12105470.

The product of its (nonzero) digits is 5898240, while the sum is 55.

The spelling of 3854388142081 in words is "three trillion, eight hundred fifty-four billion, three hundred eighty-eight million, one hundred forty-two thousand, eighty-one".