189366742 has 4 divisors (see below), whose sum is σ = 284050116. Its totient is φ = 94683370.

The previous prime is 189366733. The next prime is 189366761. The reversal of 189366742 is 247663981.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 189366692 and 189366701.

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 as a sum of consecutive naturals, namely, 47341684 + ... + 47341687.

It is an arithmetic number, because the mean of its divisors is an integer number (71012529).

Almost surely, 2^189366742 is an apocalyptic number.

189366742 is a deficient number, since it is larger than the sum of its proper divisors (94683374).

189366742 is an equidigital number, since it uses as much as digits as its factorization.

189366742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94683373.

The product of its digits is 435456, while the sum is 46.

The square root of 189366742 is about 13761.0588982098. The cubic root of 189366742 is about 574.2503066436.

It can be divided in two parts, 1893 and 66742, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 189366742 in words is "one hundred eighty-nine million, three hundred sixty-six thousand, seven hundred forty-two".