19442614923391 has 16 divisors (see below), whose sum is σ = 21909412647936. Its totient is φ = 17093151000000.

The previous prime is 19442614923383. The next prime is 19442614923443. The reversal of 19442614923391 is 19332941624491.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19442614923391 - 2³ = 19442614923383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19442614924391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19152510 + ... + 20142091.

It is an arithmetic number, because the mean of its divisors is an integer number (1369338290496).

Almost surely, 2^{19442614923391} is an apocalyptic number.

19442614923391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

19442614923391 is a deficient number, since it is larger than the sum of its proper divisors (2466797724545).

19442614923391 is a wasteful number, since it uses less digits than its factorization.

19442614923391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39296094.

The product of its digits is 10077696, while the sum is 58.

The spelling of 19442614923391 in words is "nineteen trillion, four hundred forty-two billion, six hundred fourteen million, nine hundred twenty-three thousand, three hundred ninety-one".