189725901 has 8 divisors (see below), whose sum is σ = 259137984. Its totient is φ = 123398880.

The previous prime is 189725891. The next prime is 189725909. The reversal of 189725901 is 109527981.

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

It is not a de Polignac number, because 189725901 - 2⁵ = 189725869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189725909) 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, 771121 + ... + 771366.

It is an arithmetic number, because the mean of its divisors is an integer number (32392248).

Almost surely, 2^189725901 is an apocalyptic number.

It is an amenable number.

189725901 is a deficient number, since it is larger than the sum of its proper divisors (69412083).

189725901 is a wasteful number, since it uses less digits than its factorization.

189725901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542531.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 189725901 is about 13774.1025478976. The cubic root of 189725901 is about 574.6131245092.

The spelling of 189725901 in words is "one hundred eighty-nine million, seven hundred twenty-five thousand, nine hundred one".