3971968485 has 32 divisors (see below), whose sum is σ = 6757240320. Its totient is φ = 1985399808.

The previous prime is 3971968459. The next prime is 3971968489. The reversal of 3971968485 is 5848691793.

It is not a de Polignac number, because 3971968485 - 2¹¹ = 3971966437 is a prime.

It is a super-3 number, since 3×3971968485³ (a number of 30 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971968489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28359 + ... + 93531.

It is an arithmetic number, because the mean of its divisors is an integer number (211163760).

Almost surely, 2^3971968485 is an apocalyptic number.

It is an amenable number.

3971968485 is a deficient number, since it is larger than the sum of its proper divisors (2785271835).

3971968485 is a wasteful number, since it uses less digits than its factorization.

3971968485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65437.

The product of its digits is 13063680, while the sum is 60.

The square root of 3971968485 is about 63023.5550012850. Note that the first 3 decimals coincide. The cubic root of 3971968485 is about 1583.6842514038.

The spelling of 3971968485 in words is "three billion, nine hundred seventy-one million, nine hundred sixty-eight thousand, four hundred eighty-five".