3840204881 has 4 divisors (see below), whose sum is σ = 3845683764. Its totient is φ = 3834726000.

The previous prime is 3840204869. The next prime is 3840204883. The reversal of 3840204881 is 1884020483.

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 3577116481 + 263088400 = 59809^2 + 16220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3840204881 is a prime.

It is a super-2 number, since 2×3840204881² = 29494347056112448322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3840204883) 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, 2738390 + ... + 2739791.

It is an arithmetic number, because the mean of its divisors is an integer number (961420941).

Almost surely, 2^3840204881 is an apocalyptic number.

It is an amenable number.

3840204881 is a deficient number, since it is larger than the sum of its proper divisors (5478883).

3840204881 is an equidigital number, since it uses as much as digits as its factorization.

3840204881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5478882.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 3840204881 is about 61969.3866437292. The cubic root of 3840204881 is about 1565.9749060416.

The spelling of 3840204881 in words is "three billion, eight hundred forty million, two hundred four thousand, eight hundred eighty-one".