19890909382 has 8 divisors (see below), whose sum is σ = 29845534536. Its totient is φ = 9942397872.

The previous prime is 19890909361. The next prime is 19890909431. The reversal of 19890909382 is 28390909891.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520268 + ... + 1533295.

It is an arithmetic number, because the mean of its divisors is an integer number (3730691817).

Almost surely, 2^19890909382 is an apocalyptic number.

19890909382 is a deficient number, since it is larger than the sum of its proper divisors (9954625154).

19890909382 is a wasteful number, since it uses less digits than its factorization.

19890909382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3056822.

The product of its (nonzero) digits is 2519424, while the sum is 58.

The spelling of 19890909382 in words is "nineteen billion, eight hundred ninety million, nine hundred nine thousand, three hundred eighty-two".