189974183383 has 4 divisors (see below), whose sum is σ = 189975834040. Its totient is φ = 189972532728.

The previous prime is 189974183381. The next prime is 189974183447. The reversal of 189974183383 is 383381479981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383381479981 = 419 ⋅914991599.

It is a cyclic number.

It is not a de Polignac number, because 189974183383 - 2¹ = 189974183381 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 (189974183381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638613 + ... + 887566.

It is an arithmetic number, because the mean of its divisors is an integer number (47493958510).

Almost surely, 2^189974183383 is an apocalyptic number.

189974183383 is a deficient number, since it is larger than the sum of its proper divisors (1650657).

189974183383 is a wasteful number, since it uses less digits than its factorization.

189974183383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650656.

The product of its digits is 31352832, while the sum is 64.

The spelling of 189974183383 in words is "one hundred eighty-nine billion, nine hundred seventy-four million, one hundred eighty-three thousand, three hundred eighty-three".