189508529 has 10 divisors (see below), whose sum is σ = 221082930. Its totient is φ = 162433824.

The previous prime is 189508507. The next prime is 189508547. The reversal of 189508529 is 925805981.

It can be written as a sum of positive squares in only one way, i.e., 188238400 + 1270129 = 13720^2 + 1127^2 .

It is a de Polignac number, because none of the positive numbers 2^k-189508529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189508229) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37064 + ... + 41865.

It is an arithmetic number, because the mean of its divisors is an integer number (22108293).

Almost surely, 2^189508529 is an apocalyptic number.

It is an amenable number.

189508529 is a deficient number, since it is larger than the sum of its proper divisors (31574401).

189508529 is an frugal number, since it uses more digits than its factorization.

189508529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78957 (or 78936 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 189508529 is about 13766.2096816807. The cubic root of 189508529 is about 574.3935928311.

The spelling of 189508529 in words is "one hundred eighty-nine million, five hundred eight thousand, five hundred twenty-nine".