3971087178 has 16 divisors (see below), whose sum is σ = 7943640096. Its totient is φ = 1323451440.

The previous prime is 3971087177. The next prime is 3971087179. The reversal of 3971087178 is 8717801793.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3971087177) and next prime (3971087179).

It is a self number, because there is not a number n which added to its sum of digits gives 3971087178.

It is not an unprimeable number, because it can be changed into a prime (3971087177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24133 + ... + 92328.

It is an arithmetic number, because the mean of its divisors is an integer number (496477506).

Almost surely, 2^3971087178 is an apocalyptic number.

3971087178 is an abundant number, since it is smaller than the sum of its proper divisors (3972552918).

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

3971087178 is a wasteful number, since it uses less digits than its factorization.

3971087178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122149.

The product of its (nonzero) digits is 592704, while the sum is 51.

The square root of 3971087178 is about 63016.5627275877. The cubic root of 3971087178 is about 1583.5671125710.

The spelling of 3971087178 in words is "three billion, nine hundred seventy-one million, eighty-seven thousand, one hundred seventy-eight".