189742522 has 4 divisors (see below), whose sum is σ = 284613786. Its totient is φ = 94871260.

The previous prime is 189742519. The next prime is 189742589. The reversal of 189742522 is 225247981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225247981 = 7 ⋅32178283.

It can be written as a sum of positive squares in only one way, i.e., 162588001 + 27154521 = 12751^2 + 5211^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47435629 + ... + 47435632.

Almost surely, 2^189742522 is an apocalyptic number.

189742522 is a deficient number, since it is larger than the sum of its proper divisors (94871264).

189742522 is an equidigital number, since it uses as much as digits as its factorization.

189742522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94871263.

The product of its digits is 80640, while the sum is 40.

The square root of 189742522 is about 13774.7058770777. The cubic root of 189742522 is about 574.6299037432.

The spelling of 189742522 in words is "one hundred eighty-nine million, seven hundred forty-two thousand, five hundred twenty-two".