3713644381 has 4 divisors (see below), whose sum is σ = 3716707132. Its totient is φ = 3710581632.

The previous prime is 3713644357. The next prime is 3713644447. The reversal of 3713644381 is 1834463173.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1834463173 = 257 ⋅7137989.

It can be written as a sum of positive squares in 2 ways, for example, as 974064100 + 2739580281 = 31210^2 + 52341^2 .

It is a cyclic number.

It is not a de Polignac number, because 3713644381 - 2²³ = 3705255773 is a prime.

It is a super-2 number, since 2×3713644381² = 27582309177065746322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3713644301) 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, 1529556 + ... + 1531981.

It is an arithmetic number, because the mean of its divisors is an integer number (929176783).

Almost surely, 2^3713644381 is an apocalyptic number.

It is an amenable number.

3713644381 is a deficient number, since it is larger than the sum of its proper divisors (3062751).

3713644381 is a wasteful number, since it uses less digits than its factorization.

3713644381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062750.

The product of its digits is 145152, while the sum is 40.

The square root of 3713644381 is about 60939.6782154287. The cubic root of 3713644381 is about 1548.5792574122.

The spelling of 3713644381 in words is "three billion, seven hundred thirteen million, six hundred forty-four thousand, three hundred eighty-one".