189938793 has 16 divisors (see below), whose sum is σ = 278136000. Its totient is φ = 114338880.

The previous prime is 189938741. The next prime is 189938809. The reversal of 189938793 is 397839981.

189938793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189938793 - 2⁸ = 189938537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189938993) 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, 14398 + ... + 24231.

It is an arithmetic number, because the mean of its divisors is an integer number (17383500).

Almost surely, 2^189938793 is an apocalyptic number.

It is an amenable number.

189938793 is a deficient number, since it is larger than the sum of its proper divisors (88197207).

189938793 is a wasteful number, since it uses less digits than its factorization.

189938793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38792.

The product of its digits is 2939328, while the sum is 57.

The square root of 189938793 is about 13781.8283620135. The cubic root of 189938793 is about 574.8279692042.

The spelling of 189938793 in words is "one hundred eighty-nine million, nine hundred thirty-eight thousand, seven hundred ninety-three".