3945332178 has 48 divisors (see below), whose sum is σ = 9253179360. Its totient is φ = 1245888216.

The previous prime is 3945332161. The next prime is 3945332179. The reversal of 3945332178 is 8712335493.

3945332178 is a `hidden beast` number, since 3 + 94 + 533 + 21 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (3945332179) 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 23 ways as a sum of consecutive naturals, for example, 81700 + ... + 120687.

It is an arithmetic number, because the mean of its divisors is an integer number (192774570).

Almost surely, 2^3945332178 is an apocalyptic number.

3945332178 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3945332178 is an abundant number, since it is smaller than the sum of its proper divisors (5307847182).

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

3945332178 is a wasteful number, since it uses less digits than its factorization.

3945332178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202436 (or 202411 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 3945332178 is about 62811.8792745449. The cubic root of 3945332178 is about 1580.1362081474.

It can be divided in two parts, 39453 and 32178, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 3945332178 in words is "three billion, nine hundred forty-five million, three hundred thirty-two thousand, one hundred seventy-eight".