189958 has 16 divisors (see below), whose sum is σ = 311904. Its totient is φ = 86400.

The previous prime is 189949. The next prime is 189961. The reversal of 189958 is 859981.

It is a self number, because there is not a number n which added to its sum of digits gives 189958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (19494).

2¹⁸⁹⁹⁵⁸ is an apocalyptic number.

189958 is a deficient number, since it is larger than the sum of its proper divisors (121946).

189958 is a wasteful number, since it uses less digits than its factorization.

189958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207.

The product of its digits is 25920, while the sum is 40.

The square root of 189958 is about 435.8417143872. The cubic root of 189958 is about 57.4847344479.

The spelling of 189958 in words is "one hundred eighty-nine thousand, nine hundred fifty-eight".