3851960644 has 24 divisors (see below), whose sum is σ = 7714387520. Its totient is φ = 1648597536.

The previous prime is 3851960579. The next prime is 3851960647. The reversal of 3851960644 is 4460691583.

It is a junction number, because it is equal to n+sod(n) for n = 3851960594 and 3851960603.

It is not an unprimeable number, because it can be changed into a prime (3851960647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72387 + ... + 113770.

Almost surely, 2^3851960644 is an apocalyptic number.

It is an amenable number.

3851960644 is an abundant number, since it is smaller than the sum of its proper divisors (3862426876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3851960644 is a wasteful number, since it uses less digits than its factorization.

3851960644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186907 (or 186905 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 3851960644 is about 62064.1655385779. The cubic root of 3851960644 is about 1567.5712164234.

The spelling of 3851960644 in words is "three billion, eight hundred fifty-one million, nine hundred sixty thousand, six hundred forty-four".