189896623 has 16 divisors (see below), whose sum is σ = 219930624. Its totient is φ = 160604640.

The previous prime is 189896587. The next prime is 189896653. The reversal of 189896623 is 326698981.

It is a happy number.

It is not a de Polignac number, because 189896623 - 2¹⁷ = 189765551 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 (189896653) 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 15 ways as a sum of consecutive naturals, for example, 201333 + ... + 202273.

It is an arithmetic number, because the mean of its divisors is an integer number (13745664).

Almost surely, 2^189896623 is an apocalyptic number.

189896623 is a deficient number, since it is larger than the sum of its proper divisors (30034001).

189896623 is a wasteful number, since it uses less digits than its factorization.

189896623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302.

The product of its digits is 1119744, while the sum is 52.

The square root of 189896623 is about 13780.2983639688. The cubic root of 189896623 is about 574.7854251663.

The spelling of 189896623 in words is "one hundred eighty-nine million, eight hundred ninety-six thousand, six hundred twenty-three".