3843391845 has 16 divisors (see below), whose sum is σ = 6150241152. Its totient is φ = 2049537600.

The previous prime is 3843391823. The next prime is 3843391847. The reversal of 3843391845 is 5481933483.

It is not a de Polignac number, because 3843391845 - 2²² = 3839197541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3843391794 and 3843391803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3843391847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158979 + ... + 181551.

It is an arithmetic number, because the mean of its divisors is an integer number (384390072).

Almost surely, 2^3843391845 is an apocalyptic number.

It is an amenable number.

3843391845 is a deficient number, since it is larger than the sum of its proper divisors (2306849307).

3843391845 is a wasteful number, since it uses less digits than its factorization.

3843391845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33932.

The product of its digits is 1244160, while the sum is 48.

The square root of 3843391845 is about 61995.0953301953. The cubic root of 3843391845 is about 1566.4079841243.

The spelling of 3843391845 in words is "three billion, eight hundred forty-three million, three hundred ninety-one thousand, eight hundred forty-five".