189701693 has 4 divisors (see below), whose sum is σ = 189729468. Its totient is φ = 189673920.

The previous prime is 189701689. The next prime is 189701713. The reversal of 189701693 is 396107981.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 396107981 = 2069 ⋅191449.

It can be written as a sum of positive squares in 2 ways, for example, as 139546969 + 50154724 = 11813^2 + 7082^2 .

It is a cyclic number.

It is not a de Polignac number, because 189701693 - 2² = 189701689 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 (189701653) 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 3 ways as a sum of consecutive naturals, for example, 4283 + ... + 19943.

It is an arithmetic number, because the mean of its divisors is an integer number (47432367).

Almost surely, 2^189701693 is an apocalyptic number.

It is an amenable number.

189701693 is a deficient number, since it is larger than the sum of its proper divisors (27775).

189701693 is a wasteful number, since it uses less digits than its factorization.

189701693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27774.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 189701693 is about 13773.2237693287. The cubic root of 189701693 is about 574.5886842929.

The spelling of 189701693 in words is "one hundred eighty-nine million, seven hundred one thousand, six hundred ninety-three".