19901018094 has 8 divisors (see below), whose sum is σ = 39802036200. Its totient is φ = 6633672696.

The previous prime is 19901018063. The next prime is 19901018113. The reversal of 19901018094 is 49081010991.

It is a happy number.

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

19901018094 is an admirable number.

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, 1658418169 + ... + 1658418180.

It is an arithmetic number, because the mean of its divisors is an integer number (4975254525).

Almost surely, 2^19901018094 is an apocalyptic number.

19901018094 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.

19901018094 is a wasteful number, since it uses less digits than its factorization.

19901018094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316836354.

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 19901018094 in words is "nineteen billion, nine hundred one million, eighteen thousand, ninety-four".