189428437 has 8 divisors (see below), whose sum is σ = 215634240. Its totient is φ = 164720160.

The previous prime is 189428417. The next prime is 189428479. The reversal of 189428437 is 734824981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189428437 - 2¹¹ = 189426389 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 (189428417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374112 + ... + 374617.

It is an arithmetic number, because the mean of its divisors is an integer number (26954280).

Almost surely, 2^189428437 is an apocalyptic number.

It is an amenable number.

189428437 is a deficient number, since it is larger than the sum of its proper divisors (26205803).

189428437 is a wasteful number, since it uses less digits than its factorization.

189428437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748763.

The product of its digits is 387072, while the sum is 46.

The square root of 189428437 is about 13763.3003672811. The cubic root of 189428437 is about 574.3126627637.

The spelling of 189428437 in words is "one hundred eighty-nine million, four hundred twenty-eight thousand, four hundred thirty-seven".