2905978506 has 16 divisors (see below), whose sum is σ = 5819788224. Its totient is φ = 967354304.

The previous prime is 2905978489. The next prime is 2905978513. The reversal of 2905978506 is 6058795092.

It is a happy number.

It is a super-2 number, since 2×2905978506² = 16889422154667984072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 321471 + ... + 330386.

It is an arithmetic number, because the mean of its divisors is an integer number (363736764).

Almost surely, 2^2905978506 is an apocalyptic number.

2905978506 is an abundant number, since it is smaller than the sum of its proper divisors (2913809718).

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

2905978506 is a wasteful number, since it uses less digits than its factorization.

2905978506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652605.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 2905978506 is about 53907.1285267542. The cubic root of 2905978506 is about 1427.0224293891.

The spelling of 2905978506 in words is "two billion, nine hundred five million, nine hundred seventy-eight thousand, five hundred six".