189605699 has 4 divisors (see below), whose sum is σ = 189723864. Its totient is φ = 189487536.

The previous prime is 189605659. The next prime is 189605719. The reversal of 189605699 is 996506981.

189605699 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996506981 = 1879 ⋅530339.

It is a cyclic number.

It is not a de Polignac number, because 189605699 - 2¹⁶ = 189540163 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 189605699.

It is not an unprimeable number, because it can be changed into a prime (189605639) 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, 56642 + ... + 59895.

It is an arithmetic number, because the mean of its divisors is an integer number (47430966).

Almost surely, 2^189605699 is an apocalyptic number.

189605699 is a deficient number, since it is larger than the sum of its proper divisors (118165).

189605699 is a wasteful number, since it uses less digits than its factorization.

189605699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118164.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The square root of 189605699 is about 13769.7385232981. The cubic root of 189605699 is about 574.4917489914.

The spelling of 189605699 in words is "one hundred eighty-nine million, six hundred five thousand, six hundred ninety-nine".