2778064959 has 8 divisors (see below), whose sum is σ = 3865133952. Its totient is φ = 1771519640.

The previous prime is 2778064943. The next prime is 2778064999. The reversal of 2778064959 is 9594608772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2778064959 - 2⁴ = 2778064943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2778064899 and 2778064908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2778064999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20130837 + ... + 20130974.

It is an arithmetic number, because the mean of its divisors is an integer number (483141744).

Almost surely, 2^2778064959 is an apocalyptic number.

2778064959 is a deficient number, since it is larger than the sum of its proper divisors (1087068993).

2778064959 is a wasteful number, since it uses less digits than its factorization.

2778064959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40261837.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The square root of 2778064959 is about 52707.3520393503. The cubic root of 2778064959 is about 1405.7695507716.

The spelling of 2778064959 in words is "two billion, seven hundred seventy-eight million, sixty-four thousand, nine hundred fifty-nine".