189528077 has 4 divisors (see below), whose sum is σ = 189733020. Its totient is φ = 189323136.

The previous prime is 189528071. The next prime is 189528083. The reversal of 189528077 is 770825981.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (189528071) and next prime (189528083).

It can be written as a sum of positive squares in 2 ways, for example, as 68989636 + 120538441 = 8306^2 + 10979^2 .

It is a cyclic number.

It is not a de Polignac number, because 189528077 - 2¹² = 189523981 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 (189528071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101078 + ... + 102935.

It is an arithmetic number, because the mean of its divisors is an integer number (47433255).

Almost surely, 2^189528077 is an apocalyptic number.

It is an amenable number.

189528077 is a deficient number, since it is larger than the sum of its proper divisors (204943).

189528077 is an equidigital number, since it uses as much as digits as its factorization.

189528077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204942.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 189528077 is about 13766.9196627278. The cubic root of 189528077 is about 574.4133419157.

The spelling of 189528077 in words is "one hundred eighty-nine million, five hundred twenty-eight thousand, seventy-seven".