189987141 has 8 divisors (see below), whose sum is σ = 253608544. Its totient is φ = 126511920.

The previous prime is 189987131. The next prime is 189987151. The reversal of 189987141 is 141789981.

It is an interprime number because it is at equal distance from previous prime (189987131) and next prime (189987151).

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

It is not a de Polignac number, because 189987141 - 2²³ = 181598533 is a prime.

It is a super-3 number, since 3×189987141³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189987131) 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, 33475 + ... + 38736.

It is an arithmetic number, because the mean of its divisors is an integer number (31701068).

Almost surely, 2^189987141 is an apocalyptic number.

It is an amenable number.

189987141 is a deficient number, since it is larger than the sum of its proper divisors (63621403).

189987141 is an equidigital number, since it uses as much as digits as its factorization.

189987141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73091.

The product of its digits is 145152, while the sum is 48.

The square root of 189987141 is about 13783.5822992428. The cubic root of 189987141 is about 574.8767382918.

The spelling of 189987141 in words is "one hundred eighty-nine million, nine hundred eighty-seven thousand, one hundred forty-one".