189630293 has 4 divisors (see below), whose sum is σ = 189707520. Its totient is φ = 189553068.

The previous prime is 189630271. The next prime is 189630299. The reversal of 189630293 is 392036981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 392036981 = 7 ⋅56005283.

It is a cyclic number.

It is not a de Polignac number, because 189630293 - 2¹² = 189626197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189630293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189630299) 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, 34805 + ... + 39882.

It is an arithmetic number, because the mean of its divisors is an integer number (47426880).

Almost surely, 2^189630293 is an apocalyptic number.

It is an amenable number.

189630293 is a deficient number, since it is larger than the sum of its proper divisors (77227).

189630293 is an equidigital number, since it uses as much as digits as its factorization.

189630293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77226.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 189630293 is about 13770.6315396208. The cubic root of 189630293 is about 574.5165872730.

The spelling of 189630293 in words is "one hundred eighty-nine million, six hundred thirty thousand, two hundred ninety-three".