3840843631 has 4 divisors (see below), whose sum is σ = 3842396712. Its totient is φ = 3839290552.

The previous prime is 3840843581. The next prime is 3840843637. The reversal of 3840843631 is 1363480483.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3840843631 - 2¹⁷ = 3840712559 is a prime.

It is a super-2 number, since 2×3840843631² = 29504159595586528322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840843637) 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, 772825 + ... + 777778.

It is an arithmetic number, because the mean of its divisors is an integer number (960599178).

Almost surely, 2^3840843631 is an apocalyptic number.

3840843631 is a deficient number, since it is larger than the sum of its proper divisors (1553081).

3840843631 is a wasteful number, since it uses less digits than its factorization.

3840843631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553080.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 3840843631 is about 61974.5401838529. The cubic root of 3840843631 is about 1566.0617252825.

The spelling of 3840843631 in words is "three billion, eight hundred forty million, eight hundred forty-three thousand, six hundred thirty-one".