19992853 has 4 divisors (see below), whose sum is σ = 20125408. Its totient is φ = 19860300.

The previous prime is 19992829. The next prime is 19992877. The reversal of 19992853 is 35829991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35829991 = 19 ⋅1885789.

It is an interprime number because it is at equal distance from previous prime (19992829) and next prime (19992877).

It is a cyclic number.

It is not a de Polignac number, because 19992853 - 2⁹ = 19992341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19992653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66051 + ... + 66352.

It is an arithmetic number, because the mean of its divisors is an integer number (5031352).

Almost surely, 2^19992853 is an apocalyptic number.

It is an amenable number.

19992853 is a deficient number, since it is larger than the sum of its proper divisors (132555).

19992853 is a wasteful number, since it uses less digits than its factorization.

19992853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132554.

The product of its digits is 174960, while the sum is 46.

The square root of 19992853 is about 4471.3368247091. The cubic root of 19992853 is about 271.4094245695.

The spelling of 19992853 in words is "nineteen million, nine hundred ninety-two thousand, eight hundred fifty-three".