3876494645 has 4 divisors (see below), whose sum is σ = 4651793580. Its totient is φ = 3101195712.

The previous prime is 3876494593. The next prime is 3876494647. The reversal of 3876494645 is 5464946783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5464946783 = 107 ⋅51074269.

It can be written as a sum of positive squares in 2 ways, for example, as 400920529 + 3475574116 = 20023^2 + 58954^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3876494645 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3876494647) 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, 387649460 + ... + 387649469.

It is an arithmetic number, because the mean of its divisors is an integer number (1162948395).

Almost surely, 2^3876494645 is an apocalyptic number.

It is an amenable number.

3876494645 is a deficient number, since it is larger than the sum of its proper divisors (775298935).

3876494645 is an equidigital number, since it uses as much as digits as its factorization.

3876494645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775298934.

The product of its digits is 17418240, while the sum is 56.

The square root of 3876494645 is about 62261.5021100519. The cubic root of 3876494645 is about 1570.8922464253.

The spelling of 3876494645 in words is "three billion, eight hundred seventy-six million, four hundred ninety-four thousand, six hundred forty-five".