19800933 has 8 divisors (see below), whose sum is σ = 26457408. Its totient is φ = 13172544.

The previous prime is 19800929. The next prime is 19800961. The reversal of 19800933 is 33900891.

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

It is not a de Polignac number, because 19800933 - 2² = 19800929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19800894 and 19800903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19800233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5316 + ... + 8237.

It is an arithmetic number, because the mean of its divisors is an integer number (3307176).

Almost surely, 2^19800933 is an apocalyptic number.

It is an amenable number.

19800933 is a deficient number, since it is larger than the sum of its proper divisors (6656475).

19800933 is a wasteful number, since it uses less digits than its factorization.

19800933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14043.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 19800933 is about 4449.8239291010. The cubic root of 19800933 is about 270.5381721282.

The spelling of 19800933 in words is "nineteen million, eight hundred thousand, nine hundred thirty-three".