19893848194 has 64 divisors (see below), whose sum is σ = 33478945920. Its totient is φ = 8790400000.

The previous prime is 19893848131. The next prime is 19893848203. The reversal of 19893848194 is 49184839891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49610394 + ... + 49610794.

It is an arithmetic number, because the mean of its divisors is an integer number (523108530).

Almost surely, 2^19893848194 is an apocalyptic number.

19893848194 is a deficient number, since it is larger than the sum of its proper divisors (13585097726).

19893848194 is a wasteful number, since it uses less digits than its factorization.

19893848194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867.

The product of its digits is 17915904, while the sum is 64.

The spelling of 19893848194 in words is "nineteen billion, eight hundred ninety-three million, eight hundred forty-eight thousand, one hundred ninety-four".