3869441845 has 4 divisors (see below), whose sum is σ = 4643330220. Its totient is φ = 3095553472.

The previous prime is 3869441831. The next prime is 3869441887. The reversal of 3869441845 is 5481449683.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2775287761 + 1094154084 = 52681^2 + 33078^2 .

It is a cyclic number.

It is not a de Polignac number, because 3869441845 - 2⁵ = 3869441813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3869441792 and 3869441801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386944180 + ... + 386944189.

It is an arithmetic number, because the mean of its divisors is an integer number (1160832555).

Almost surely, 2^3869441845 is an apocalyptic number.

It is an amenable number.

3869441845 is a deficient number, since it is larger than the sum of its proper divisors (773888375).

3869441845 is an equidigital number, since it uses as much as digits as its factorization.

3869441845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773888374.

The product of its digits is 3317760, while the sum is 52.

The square root of 3869441845 is about 62204.8377941780. The cubic root of 3869441845 is about 1569.9389870403.

The spelling of 3869441845 in words is "three billion, eight hundred sixty-nine million, four hundred forty-one thousand, eight hundred forty-five".