19903361 has 8 divisors (see below), whose sum is σ = 20143104. Its totient is φ = 19665360.

The previous prime is 19903321. The next prime is 19903381. The reversal of 19903361 is 16330991.

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 19903361 - 2⁶ = 19903297 is a prime.

It is a super-2 number, since 2×19903361² = 792287558192642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19903321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51776 + ... + 52158.

It is an arithmetic number, because the mean of its divisors is an integer number (2517888).

Almost surely, 2^19903361 is an apocalyptic number.

It is an amenable number.

19903361 is a deficient number, since it is larger than the sum of its proper divisors (239743).

19903361 is a wasteful number, since it uses less digits than its factorization.

19903361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 19903361 is about 4461.3183029235. The cubic root of 19903361 is about 271.0038579172.

The spelling of 19903361 in words is "nineteen million, nine hundred three thousand, three hundred sixty-one".