2778038258 has 16 divisors (see below), whose sum is σ = 4189116960. Its totient is φ = 1381677216.

The previous prime is 2778038251. The next prime is 2778038261. The reversal of 2778038258 is 8528308772.

It is not an unprimeable number, because it can be changed into a prime (2778038251) 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, 728585 + ... + 732387.

It is an arithmetic number, because the mean of its divisors is an integer number (261819810).

Almost surely, 2^2778038258 is an apocalyptic number.

2778038258 is a deficient number, since it is larger than the sum of its proper divisors (1411078702).

2778038258 is a wasteful number, since it uses less digits than its factorization.

2778038258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5641.

The product of its (nonzero) digits is 1505280, while the sum is 50.

The square root of 2778038258 is about 52707.0987439074. The cubic root of 2778038258 is about 1405.7650469685.

The spelling of 2778038258 in words is "two billion, seven hundred seventy-eight million, thirty-eight thousand, two hundred fifty-eight".