3506879978 has 32 divisors (see below), whose sum is σ = 6232705920. Its totient is φ = 1448605440.

The previous prime is 3506879947. The next prime is 3506880001. The reversal of 3506879978 is 8799786053.

It is a self number, because there is not a number n which added to its sum of digits gives 3506879978.

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 15 ways as a sum of consecutive naturals, for example, 10838 + ... + 84446.

It is an arithmetic number, because the mean of its divisors is an integer number (194772060).

Almost surely, 2^3506879978 is an apocalyptic number.

3506879978 is a deficient number, since it is larger than the sum of its proper divisors (2725825942).

3506879978 is a wasteful number, since it uses less digits than its factorization.

3506879978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73742.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The square root of 3506879978 is about 59218.9157111138. The cubic root of 3506879978 is about 1519.2886759988.

The spelling of 3506879978 in words is "three billion, five hundred six million, eight hundred seventy-nine thousand, nine hundred seventy-eight".