2979511855 has 4 divisors (see below), whose sum is σ = 3575414232. Its totient is φ = 2383609480.

The previous prime is 2979511853. The next prime is 2979511867. The reversal of 2979511855 is 5581159792.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2979511855 - 2¹ = 2979511853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2979511853) 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, 297951181 + ... + 297951190.

It is an arithmetic number, because the mean of its divisors is an integer number (893853558).

Almost surely, 2^2979511855 is an apocalyptic number.

2979511855 is a deficient number, since it is larger than the sum of its proper divisors (595902377).

2979511855 is an equidigital number, since it uses as much as digits as its factorization.

2979511855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595902376.

The product of its digits is 1134000, while the sum is 52.

The square root of 2979511855 is about 54584.9050104514. The cubic root of 2979511855 is about 1438.9588434315.

The spelling of 2979511855 in words is "two billion, nine hundred seventy-nine million, five hundred eleven thousand, eight hundred fifty-five".