20849630874 has 8 divisors (see below), whose sum is σ = 41699261760. Its totient is φ = 6949876956.

The previous prime is 20849630843. The next prime is 20849630887. The reversal of 20849630874 is 47803694802.

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

20849630874 is an admirable number.

It is a Curzon 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, 1737469234 + ... + 1737469245.

It is an arithmetic number, because the mean of its divisors is an integer number (5212407720).

Almost surely, 2^20849630874 is an apocalyptic number.

20849630874 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.

20849630874 is a wasteful number, since it uses less digits than its factorization.

20849630874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474938484.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 20849630874 in words is "twenty billion, eight hundred forty-nine million, six hundred thirty thousand, eight hundred seventy-four".