2878979957 has 6 divisors (see below), whose sum is σ = 3349017558. Its totient is φ = 2467697064.

The previous prime is 2878979941. The next prime is 2878979963. The reversal of 2878979957 is 7599798782.

It can be written as a sum of positive squares in only one way, i.e., 2877356881 + 1623076 = 53641^2 + 1274^2 .

It is not a de Polignac number, because 2878979957 - 2⁴ = 2878979941 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 (2878979057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29377298 + ... + 29377395.

It is an arithmetic number, because the mean of its divisors is an integer number (558169593).

Almost surely, 2^2878979957 is an apocalyptic number.

It is an amenable number.

2878979957 is a deficient number, since it is larger than the sum of its proper divisors (470037601).

2878979957 is an equidigital number, since it uses as much as digits as its factorization.

2878979957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58754707 (or 58754700 counting only the distinct ones).

The product of its digits is 160030080, while the sum is 71.

The square root of 2878979957 is about 53656.1269288047. The cubic root of 2878979957 is about 1422.5893304744.

The spelling of 2878979957 in words is "two billion, eight hundred seventy-eight million, nine hundred seventy-nine thousand, nine hundred fifty-seven".