3201978378 has 8 divisors (see below), whose sum is σ = 6403956768. Its totient is φ = 1067326124.

The previous prime is 3201978337. The next prime is 3201978391. The reversal of 3201978378 is 8738791023.

It is a sphenic number, since it is the product of 3 distinct primes.

3201978378 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266831526 + ... + 266831537.

It is an arithmetic number, because the mean of its divisors is an integer number (800494596).

Almost surely, 2^3201978378 is an apocalyptic number.

3201978378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3201978378 is a wasteful number, since it uses less digits than its factorization.

3201978378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533663068.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 3201978378 is about 56586.0263492675. The cubic root of 3201978378 is about 1473.9162205137.

The spelling of 3201978378 in words is "three billion, two hundred one million, nine hundred seventy-eight thousand, three hundred seventy-eight".