189930138223 has 16 divisors (see below), whose sum is σ = 223305698880. Its totient is φ = 158130095616.

The previous prime is 189930138193. The next prime is 189930138253. The reversal of 189930138223 is 322831039981.

It is an interprime number because it is at equal distance from previous prime (189930138193) and next prime (189930138253).

It is not a de Polignac number, because 189930138223 - 2⁹ = 189930137711 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 (189930138253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 464728 + ... + 771901.

It is an arithmetic number, because the mean of its divisors is an integer number (13956606180).

Almost surely, 2^189930138223 is an apocalyptic number.

189930138223 is a deficient number, since it is larger than the sum of its proper divisors (33375560657).

189930138223 is a wasteful number, since it uses less digits than its factorization.

189930138223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237266.

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 189930138223 in words is "one hundred eighty-nine billion, nine hundred thirty million, one hundred thirty-eight thousand, two hundred twenty-three".