189886157 has 8 divisors (see below), whose sum is σ = 194140800. Its totient is φ = 185640544.

The previous prime is 189886153. The next prime is 189886219. The reversal of 189886157 is 751688981.

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

It is a cyclic number.

It is not a de Polignac number, because 189886157 - 2² = 189886153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189886099 and 189886108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189886153) 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, 57569 + ... + 60777.

It is an arithmetic number, because the mean of its divisors is an integer number (24267600).

Almost surely, 2^189886157 is an apocalyptic number.

It is an amenable number.

189886157 is a deficient number, since it is larger than the sum of its proper divisors (4254643).

189886157 is a wasteful number, since it uses less digits than its factorization.

189886157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515.

The product of its digits is 967680, while the sum is 53.

The square root of 189886157 is about 13779.9186136929. The cubic root of 189886157 is about 574.7748653598.

The spelling of 189886157 in words is "one hundred eighty-nine million, eight hundred eighty-six thousand, one hundred fifty-seven".