2654726978 has 6 divisors (see below), whose sum is σ = 3982199769. Its totient is φ = 1327327056.

The previous prime is 2654726959. The next prime is 2654727037. The reversal of 2654726978 is 8796274562.

It can be written as a sum of positive squares in 2 ways, for example, as 2177435569 + 477291409 = 46663^2 + 21847^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=36433.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 54650 + ... + 91082.

Almost surely, 2^2654726978 is an apocalyptic number.

2654726978 is a deficient number, since it is larger than the sum of its proper divisors (1327472791).

2654726978 is an frugal number, since it uses more digits than its factorization.

2654726978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72868 (or 36435 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 56.

The square root of 2654726978 is about 51524.0427179390. The cubic root of 2654726978 is about 1384.6498227163.

The spelling of 2654726978 in words is "two billion, six hundred fifty-four million, seven hundred twenty-six thousand, nine hundred seventy-eight".