189397659 has 8 divisors (see below), whose sum is σ = 275487552. Its totient is φ = 114786440.

The previous prime is 189397657. The next prime is 189397667. The reversal of 189397659 is 956793981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189397659 - 2¹ = 189397657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189397599 and 189397608.

It is not an unprimeable number, because it can be changed into a prime (189397657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2869629 + ... + 2869694.

It is an arithmetic number, because the mean of its divisors is an integer number (34435944).

Almost surely, 2^189397659 is an apocalyptic number.

189397659 is a deficient number, since it is larger than the sum of its proper divisors (86089893).

189397659 is a wasteful number, since it uses less digits than its factorization.

189397659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739337.

The product of its digits is 3674160, while the sum is 57.

The square root of 189397659 is about 13762.1822034153. The cubic root of 189397659 is about 574.2815566411.

The spelling of 189397659 in words is "one hundred eighty-nine million, three hundred ninety-seven thousand, six hundred fifty-nine".