2941691978 has 8 divisors (see below), whose sum is σ = 4415943972. Its totient is φ = 1469710656.

The previous prime is 2941691971. The next prime is 2941691989. The reversal of 2941691978 is 8791961492.

2941691978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2716181689 + 225510289 = 52117^2 + 15017^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2941691971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564425 + ... + 569612.

Almost surely, 2^2941691978 is an apocalyptic number.

2941691978 is a deficient number, since it is larger than the sum of its proper divisors (1474251994).

2941691978 is a wasteful number, since it uses less digits than its factorization.

2941691978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135336.

The product of its digits is 1959552, while the sum is 56.

The square root of 2941691978 is about 54237.3669899268. The cubic root of 2941691978 is about 1432.8445145591.

The spelling of 2941691978 in words is "two billion, nine hundred forty-one million, six hundred ninety-one thousand, nine hundred seventy-eight".