3849945971 has 2 divisors, whose sum is σ = 3849945972. Its totient is φ = 3849945970.

The previous prime is 3849945943. The next prime is 3849945997. The reversal of 3849945971 is 1795499483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3849945971 - 2⁶ = 3849945907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3849945971.

It is not a weakly prime, because it can be changed into another prime (3849945271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1924972985 + 1924972986.

It is an arithmetic number, because the mean of its divisors is an integer number (1924972986).

Almost surely, 2^3849945971 is an apocalyptic number.

3849945971 is a deficient number, since it is larger than the sum of its proper divisors (1).

3849945971 is an equidigital number, since it uses as much as digits as its factorization.

3849945971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 59.

The square root of 3849945971 is about 62047.9328503376. The cubic root of 3849945971 is about 1567.2978756104.

The spelling of 3849945971 in words is "three billion, eight hundred forty-nine million, nine hundred forty-five thousand, nine hundred seventy-one".