2054239866 has 48 divisors (see below), whose sum is σ = 5275093824. Its totient is φ = 586924704.

The previous prime is 2054239849. The next prime is 2054239877. The reversal of 2054239866 is 6689324502.

2054239866 is a `hidden beast` number, since 20 + 542 + 3 + 9 + 86 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298515 + ... + 305318.

It is an arithmetic number, because the mean of its divisors is an integer number (109897788).

Almost surely, 2^2054239866 is an apocalyptic number.

2054239866 is an abundant number, since it is smaller than the sum of its proper divisors (3220853958).

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

2054239866 is an equidigital number, since it uses as much as digits as its factorization.

2054239866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603857 (or 603845 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2054239866 is about 45323.7229935935. The cubic root of 2054239866 is about 1271.2092695855.

The spelling of 2054239866 in words is "two billion, fifty-four million, two hundred thirty-nine thousand, eight hundred sixty-six".