189658693 has 4 divisors (see below), whose sum is σ = 216752800. Its totient is φ = 162564588.

The previous prime is 189658691. The next prime is 189658717. The reversal of 189658693 is 396856981.

It is a happy number.

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: 396856981 = 73 ⋅5436397.

It is a cyclic number.

It is not a de Polignac number, because 189658693 - 2¹ = 189658691 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 (189658691) 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, 13547043 + ... + 13547056.

It is an arithmetic number, because the mean of its divisors is an integer number (54188200).

Almost surely, 2^189658693 is an apocalyptic number.

It is an amenable number.

189658693 is a deficient number, since it is larger than the sum of its proper divisors (27094107).

189658693 is an equidigital number, since it uses as much as digits as its factorization.

189658693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27094106.

The product of its digits is 2799360, while the sum is 55.

The square root of 189658693 is about 13771.6626810273. The cubic root of 189658693 is about 574.5452666862.

The spelling of 189658693 in words is "one hundred eighty-nine million, six hundred fifty-eight thousand, six hundred ninety-three".