19138833 has 48 divisors (see below), whose sum is σ = 33945600. Its totient is φ = 10147680.

The previous prime is 19138807. The next prime is 19138843. The reversal of 19138833 is 33883191.

It is not a de Polignac number, because 19138833 - 2⁸ = 19138577 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19138843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70488 + ... + 70758.

It is an arithmetic number, because the mean of its divisors is an integer number (707200).

Almost surely, 2^19138833 is an apocalyptic number.

It is an amenable number.

19138833 is a deficient number, since it is larger than the sum of its proper divisors (14806767).

19138833 is a wasteful number, since it uses less digits than its factorization.

19138833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 19138833 is about 4374.7951952063. The cubic root of 19138833 is about 267.4885219403.

The spelling of 19138833 in words is "nineteen million, one hundred thirty-eight thousand, eight hundred thirty-three".