189551942 has 8 divisors (see below), whose sum is σ = 299292600. Its totient is φ = 89787744.

The previous prime is 189551939. The next prime is 189551951. The reversal of 189551942 is 249155981.

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

It is a junction number, because it is equal to n+sod(n) for n = 189551893 and 189551902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2494067 + ... + 2494142.

It is an arithmetic number, because the mean of its divisors is an integer number (37411575).

Almost surely, 2^189551942 is an apocalyptic number.

189551942 is a deficient number, since it is larger than the sum of its proper divisors (109740658).

189551942 is a wasteful number, since it uses less digits than its factorization.

189551942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988230.

The product of its digits is 129600, while the sum is 44.

The square root of 189551942 is about 13767.7863870704. The cubic root of 189551942 is about 574.4374505672.

The spelling of 189551942 in words is "one hundred eighty-nine million, five hundred fifty-one thousand, nine hundred forty-two".