3861204481 has 4 divisors (see below), whose sum is σ = 3861527764. Its totient is φ = 3860881200.

The previous prime is 3861204467. The next prime is 3861204493. The reversal of 3861204481 is 1844021683.

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 3276532081 + 584672400 = 57241^2 + 24180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3861204481 is a prime.

It is a super-2 number, since 2×3861204481² = 29817800088188958722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3861204481.

It is not an unprimeable number, because it can be changed into a prime (3861204181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143010 + ... + 167851.

It is an arithmetic number, because the mean of its divisors is an integer number (965381941).

Almost surely, 2^3861204481 is an apocalyptic number.

It is an amenable number.

3861204481 is a deficient number, since it is larger than the sum of its proper divisors (323283).

3861204481 is a wasteful number, since it uses less digits than its factorization.

3861204481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323282.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 3861204481 is about 62138.5909157908. The cubic root of 3861204481 is about 1568.8241538552.

The spelling of 3861204481 in words is "three billion, eight hundred sixty-one million, two hundred four thousand, four hundred eighty-one".