3947342180 has 12 divisors (see below), whose sum is σ = 8289418620. Its totient is φ = 1578936864.

The previous prime is 3947342159. The next prime is 3947342209. The reversal of 3947342180 is 812437493.

It can be written as a sum of positive squares in 2 ways, for example, as 1379082496 + 2568259684 = 37136^2 + 50678^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98683535 + ... + 98683574.

It is an arithmetic number, because the mean of its divisors is an integer number (690784885).

Almost surely, 2^3947342180 is an apocalyptic number.

It is an amenable number.

3947342180 is an abundant number, since it is smaller than the sum of its proper divisors (4342076440).

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

3947342180 is a wasteful number, since it uses less digits than its factorization.

3947342180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197367118 (or 197367116 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 3947342180 is about 62827.8774112257. The cubic root of 3947342180 is about 1580.4045030660.

The spelling of 3947342180 in words is "three billion, nine hundred forty-seven million, three hundred forty-two thousand, one hundred eighty".