2778364147 has 8 divisors (see below), whose sum is σ = 2992540880. Its totient is φ = 2564252640.

The previous prime is 2778364049. The next prime is 2778364153. The reversal of 2778364147 is 7414638772.

It is a happy number.

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 2778364147 - 2¹⁹ = 2777839859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2778364147.

It is not an unprimeable number, because it can be changed into a prime (2778304147) 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, 106429 + ... + 129937.

It is an arithmetic number, because the mean of its divisors is an integer number (374067610).

Almost surely, 2^2778364147 is an apocalyptic number.

2778364147 is a deficient number, since it is larger than the sum of its proper divisors (214176733).

2778364147 is a wasteful number, since it uses less digits than its factorization.

2778364147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32613.

The product of its digits is 1580544, while the sum is 49.

The square root of 2778364147 is about 52710.1901628139. The cubic root of 2778364147 is about 1405.8200144683.

The spelling of 2778364147 in words is "two billion, seven hundred seventy-eight million, three hundred sixty-four thousand, one hundred forty-seven".