3971161152 has 84 divisors (see below), whose sum is σ = 13008717696. Its totient is φ = 1134616320.

The previous prime is 3971161141. The next prime is 3971161153. The reversal of 3971161152 is 2511611793.

It is a happy number.

3971161152 is a `hidden beast` number, since 39 + 7 + 1 + 1 + 611 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3971161153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 488424 + ... + 496487.

Almost surely, 2^3971161152 is an apocalyptic number.

3971161152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3971161152 is an abundant number, since it is smaller than the sum of its proper divisors (9037556544).

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

3971161152 is a wasteful number, since it uses less digits than its factorization.

3971161152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984936 (or 984923 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 3971161152 is about 63017.1496657854. The cubic root of 3971161152 is about 1583.5769454841.

The spelling of 3971161152 in words is "three billion, nine hundred seventy-one million, one hundred sixty-one thousand, one hundred fifty-two".