3813800813631 has 12 divisors (see below), whose sum is σ = 5508885162040. Its totient is φ = 2542505369040.

The previous prime is 3813800813629. The next prime is 3813800813633. The reversal of 3813800813631 is 1363180083183.

3813800813631 is a `hidden beast` number, since 3 + 8 + 1 + 3 + 8 + 0 + 0 + 8 + 1 + 3 + 631 = 666.

It is an interprime number because it is at equal distance from previous prime (3813800813629) and next prime (3813800813633).

It is not a de Polignac number, because 3813800813631 - 2¹ = 3813800813629 is a prime.

It is a super-2 number, since 2×3813800813631² (a number of 26 digits) 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 (3813800813633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1511716 + ... + 3148473.

Almost surely, 2^{3813800813631} is an apocalyptic number.

3813800813631 is a deficient number, since it is larger than the sum of its proper divisors (1695084348409).

3813800813631 is a wasteful number, since it uses less digits than its factorization.

3813800813631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751126 (or 4751123 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 3813800813631 in words is "three trillion, eight hundred thirteen billion, eight hundred million, eight hundred thirteen thousand, six hundred thirty-one".