2780647198 has 24 divisors (see below), whose sum is σ = 4854605184. Its totient is φ = 1191052800.

The previous prime is 2780647193. The next prime is 2780647201. The reversal of 2780647198 is 8917460872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2780647193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200158 + ... + 213598.

It is an arithmetic number, because the mean of its divisors is an integer number (202275216).

Almost surely, 2^2780647198 is an apocalyptic number.

2780647198 is a deficient number, since it is larger than the sum of its proper divisors (2073957986).

2780647198 is a wasteful number, since it uses less digits than its factorization.

2780647198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15568 (or 15561 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 2780647198 is about 52731.8423535533. The cubic root of 2780647198 is about 1406.2049748139.

The spelling of 2780647198 in words is "two billion, seven hundred eighty million, six hundred forty-seven thousand, one hundred ninety-eight".