2540801966 has 8 divisors (see below), whose sum is σ = 3812681664. Its totient is φ = 1269908080.

The previous prime is 2540801957. The next prime is 2540801971. The reversal of 2540801966 is 6691080452.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 239975 + ... + 250338.

It is an arithmetic number, because the mean of its divisors is an integer number (476585208).

Almost surely, 2^2540801966 is an apocalyptic number.

2540801966 is a deficient number, since it is larger than the sum of its proper divisors (1271879698).

2540801966 is a wasteful number, since it uses less digits than its factorization.

2540801966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492906.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 2540801966 is about 50406.3683079827. The cubic root of 2540801966 is about 1364.5525717154.

The spelling of 2540801966 in words is "two billion, five hundred forty million, eight hundred one thousand, nine hundred sixty-six".