75189838 has 4 divisors (see below), whose sum is σ = 112784760. Its totient is φ = 37594918.

The previous prime is 75189817. The next prime is 75189839. The reversal of 75189838 is 83898157.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83898157 = 7 ⋅11985451.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 75189791 and 75189800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75189839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18797458 + ... + 18797461.

It is an arithmetic number, because the mean of its divisors is an integer number (28196190).

Almost surely, 2^75189838 is an apocalyptic number.

75189838 is a deficient number, since it is larger than the sum of its proper divisors (37594922).

75189838 is a wasteful number, since it uses less digits than its factorization.

75189838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37594921.

The product of its digits is 483840, while the sum is 49.

The square root of 75189838 is about 8671.2074130423. The cubic root of 75189838 is about 422.0718452432.

The spelling of 75189838 in words is "seventy-five million, one hundred eighty-nine thousand, eight hundred thirty-eight".