3146774978 has 8 divisors (see below), whose sum is σ = 4882926780. Its totient is φ = 1519132720.

The previous prime is 3146774977. The next prime is 3146774993. The reversal of 3146774978 is 8794776413.

It can be written as a sum of positive squares in 2 ways, for example, as 3118440649 + 28334329 = 55843^2 + 5323^2 .

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 (3146774977) 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, 27127313 + ... + 27127428.

Almost surely, 2^3146774978 is an apocalyptic number.

3146774978 is a deficient number, since it is larger than the sum of its proper divisors (1736151802).

3146774978 is a wasteful number, since it uses less digits than its factorization.

3146774978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54254772.

The product of its digits is 7112448, while the sum is 56.

The square root of 3146774978 is about 56096.1226645835. The cubic root of 3146774978 is about 1465.3967681324.

The spelling of 3146774978 in words is "three billion, one hundred forty-six million, seven hundred seventy-four thousand, nine hundred seventy-eight".