3813538885 has 16 divisors (see below), whose sum is σ = 4929580656. Its totient is φ = 2815400448.

The previous prime is 3813538877. The next prime is 3813538901. The reversal of 3813538885 is 5888353183.

It can be written as a sum of positive squares in 8 ways, for example, as 44315649 + 3769223236 = 6657^2 + 61394^2 .

It is a cyclic number.

It is not a de Polignac number, because 3813538885 - 2³ = 3813538877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399387 + ... + 408823.

It is an arithmetic number, because the mean of its divisors is an integer number (308098791).

Almost surely, 2^3813538885 is an apocalyptic number.

It is an amenable number.

3813538885 is a deficient number, since it is larger than the sum of its proper divisors (1116041771).

3813538885 is a wasteful number, since it uses less digits than its factorization.

3813538885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672.

The product of its digits is 2764800, while the sum is 52.

The square root of 3813538885 is about 61753.8572479485. The cubic root of 3813538885 is about 1562.3418264205.

The spelling of 3813538885 in words is "three billion, eight hundred thirteen million, five hundred thirty-eight thousand, eight hundred eighty-five".