189266649693 has 16 divisors (see below), whose sum is σ = 275304557376. Its totient is φ = 114703888640.

The previous prime is 189266649673. The next prime is 189266649697. The reversal of 189266649693 is 396946662981.

It is not a de Polignac number, because 189266649693 - 2¹⁷ = 189266518621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189266649697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1789771 + ... + 1892567.

It is an arithmetic number, because the mean of its divisors is an integer number (17206534836).

Almost surely, 2^189266649693 is an apocalyptic number.

It is an amenable number.

189266649693 is a deficient number, since it is larger than the sum of its proper divisors (86037907683).

189266649693 is a wasteful number, since it uses less digits than its factorization.

189266649693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158604.

The product of its digits is 181398528, while the sum is 69.

The spelling of 189266649693 in words is "one hundred eighty-nine billion, two hundred sixty-six million, six hundred forty-nine thousand, six hundred ninety-three".