189393433707 has 16 divisors (see below), whose sum is σ = 254121190400. Its totient is φ = 125466056352.

The previous prime is 189393433699. The next prime is 189393433709. The reversal of 189393433707 is 707334393981.

189393433707 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189393433707 - 2³ = 189393433699 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189393433709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107169 + ... + 624717.

It is an arithmetic number, because the mean of its divisors is an integer number (15882574400).

Almost surely, 2^189393433707 is an apocalyptic number.

189393433707 is a deficient number, since it is larger than the sum of its proper divisors (64727756693).

189393433707 is a wasteful number, since it uses less digits than its factorization.

189393433707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518322.

The product of its (nonzero) digits is 10287648, while the sum is 57.

The spelling of 189393433707 in words is "one hundred eighty-nine billion, three hundred ninety-three million, four hundred thirty-three thousand, seven hundred seven".