2979511856 has 20 divisors (see below), whose sum is σ = 5776974000. Its totient is φ = 1488679872.

The previous prime is 2979511853. The next prime is 2979511867. The reversal of 2979511856 is 6581159792.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2979511798 and 2979511807.

It is not an unprimeable number, because it can be changed into a prime (2979511853) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44171 + ... + 88938.

It is an arithmetic number, because the mean of its divisors is an integer number (288848700).

Almost surely, 2^2979511856 is an apocalyptic number.

It is an amenable number.

2979511856 is a deficient number, since it is larger than the sum of its proper divisors (2797462144).

2979511856 is a wasteful number, since it uses less digits than its factorization.

2979511856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134516 (or 134510 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 53.

The square root of 2979511856 is about 54584.9050196114. The cubic root of 2979511856 is about 1438.9588435924.

The spelling of 2979511856 in words is "two billion, nine hundred seventy-nine million, five hundred eleven thousand, eight hundred fifty-six".