19338957 has 12 divisors (see below), whose sum is σ = 30473664. Its totient is φ = 11720520.

The previous prime is 19338953. The next prime is 19338959. The reversal of 19338957 is 75983391.

It is a happy number.

It is not a de Polignac number, because 19338957 - 2² = 19338953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19338953) 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 11 ways as a sum of consecutive naturals, for example, 97573 + ... + 97770.

It is an arithmetic number, because the mean of its divisors is an integer number (2539472).

Almost surely, 2^19338957 is an apocalyptic number.

It is an amenable number.

19338957 is a deficient number, since it is larger than the sum of its proper divisors (11134707).

19338957 is a wasteful number, since it uses less digits than its factorization.

19338957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195360 (or 195357 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 19338957 is about 4397.6080998652. The cubic root of 19338957 is about 268.4176167046.

The spelling of 19338957 in words is "nineteen million, three hundred thirty-eight thousand, nine hundred fifty-seven".