189531703 has 4 divisors (see below), whose sum is σ = 189585760. Its totient is φ = 189477648.

The previous prime is 189531689. The next prime is 189531721. The reversal of 189531703 is 307135981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 307135981 = 1373 ⋅223697.

It is a cyclic number.

It is not a de Polignac number, because 189531703 - 2¹³ = 189523511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189531743) 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 3 ways as a sum of consecutive naturals, for example, 21375 + ... + 28912.

It is an arithmetic number, because the mean of its divisors is an integer number (47396440).

Almost surely, 2^189531703 is an apocalyptic number.

189531703 is a deficient number, since it is larger than the sum of its proper divisors (54057).

189531703 is an equidigital number, since it uses as much as digits as its factorization.

189531703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54056.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 189531703 is about 13767.0513545930. The cubic root of 189531703 is about 574.4170050660.

The spelling of 189531703 in words is "one hundred eighty-nine million, five hundred thirty-one thousand, seven hundred three".