2549754978 has 8 divisors (see below), whose sum is σ = 5099509968. Its totient is φ = 849918324.

The previous prime is 2549754931. The next prime is 2549755001. The reversal of 2549754978 is 8794579452.

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

2549754978 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212479576 + ... + 212479587.

It is an arithmetic number, because the mean of its divisors is an integer number (637438746).

Almost surely, 2^2549754978 is an apocalyptic number.

2549754978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2549754978 is a wasteful number, since it uses less digits than its factorization.

2549754978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424959168.

The product of its digits is 25401600, while the sum is 60.

The square root of 2549754978 is about 50495.0985542161. The cubic root of 2549754978 is about 1366.1534486885.

The spelling of 2549754978 in words is "two billion, five hundred forty-nine million, seven hundred fifty-four thousand, nine hundred seventy-eight".