3873713581 has 2 divisors, whose sum is σ = 3873713582. Its totient is φ = 3873713580.

The previous prime is 3873713549. The next prime is 3873713603. The reversal of 3873713581 is 1853173783.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3341996100 + 531717481 = 57810^2 + 23059^2 .

It is a cyclic number.

It is not a de Polignac number, because 3873713581 - 2⁵ = 3873713549 is a prime.

It is a super-2 number, since 2×3873713581² = 30011313815247687122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3873713881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936856790 + 1936856791.

It is an arithmetic number, because the mean of its divisors is an integer number (1936856791).

Almost surely, 2^3873713581 is an apocalyptic number.

It is an amenable number.

3873713581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3873713581 is an equidigital number, since it uses as much as digits as its factorization.

3873713581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 3873713581 is about 62239.1643661770. The cubic root of 3873713581 is about 1570.5164948396.

The spelling of 3873713581 in words is "three billion, eight hundred seventy-three million, seven hundred thirteen thousand, five hundred eighty-one".