2778791262 has 16 divisors (see below), whose sum is σ = 5985089040. Its totient is φ = 855012672.

The previous prime is 2778791243. The next prime is 2778791311. The reversal of 2778791262 is 2621978772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17812687 + ... + 17812842.

It is an arithmetic number, because the mean of its divisors is an integer number (374068065).

Almost surely, 2^2778791262 is an apocalyptic number.

2778791262 is an abundant number, since it is smaller than the sum of its proper divisors (3206297778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2778791262 is a wasteful number, since it uses less digits than its factorization.

2778791262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35625547.

The product of its digits is 1185408, while the sum is 51.

The square root of 2778791262 is about 52714.2415481813. The cubic root of 2778791262 is about 1405.8920491883.

The spelling of 2778791262 in words is "two billion, seven hundred seventy-eight million, seven hundred ninety-one thousand, two hundred sixty-two".