19382020121 has 8 divisors (see below), whose sum is σ = 20226697920. Its totient is φ = 18537507472.

The previous prime is 19382020117. The next prime is 19382020139. The reversal of 19382020121 is 12102028391.

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

It is a cyclic number.

It is not a de Polignac number, because 19382020121 - 2² = 19382020117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19382020111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239150 + ... + 309768.

It is an arithmetic number, because the mean of its divisors is an integer number (2528337240).

Almost surely, 2^19382020121 is an apocalyptic number.

It is an amenable number.

19382020121 is a deficient number, since it is larger than the sum of its proper divisors (844677799).

19382020121 is a wasteful number, since it uses less digits than its factorization.

19382020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82575.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 19382020121 in words is "nineteen billion, three hundred eighty-two million, twenty thousand, one hundred twenty-one".