189758849 has 8 divisors (see below), whose sum is σ = 217576128. Its totient is φ = 162118800.

The previous prime is 189758839. The next prime is 189758851. The reversal of 189758849 is 948857981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189758849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189758819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42002 + ... + 46299.

It is an arithmetic number, because the mean of its divisors is an integer number (27197016).

Almost surely, 2^189758849 is an apocalyptic number.

It is an amenable number.

189758849 is a deficient number, since it is larger than the sum of its proper divisors (27817279).

189758849 is an equidigital number, since it uses as much as digits as its factorization.

189758849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88615.

The product of its digits is 5806080, while the sum is 59.

The square root of 189758849 is about 13775.2985085623. The cubic root of 189758849 is about 574.6463852243.

The spelling of 189758849 in words is "one hundred eighty-nine million, seven hundred fifty-eight thousand, eight hundred forty-nine".