189690148 has 24 divisors (see below), whose sum is σ = 369986400. Its totient is φ = 84567168.

The previous prime is 189690143. The next prime is 189690181. The reversal of 189690148 is 841096981.

It is a junction number, because it is equal to n+sod(n) for n = 189690098 and 189690107.

It is not an unprimeable number, because it can be changed into a prime (189690143) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 72118 + ... + 74701.

It is an arithmetic number, because the mean of its divisors is an integer number (15416100).

Almost surely, 2^189690148 is an apocalyptic number.

It is an amenable number.

189690148 is a deficient number, since it is larger than the sum of its proper divisors (180296252).

189690148 is a wasteful number, since it uses less digits than its factorization.

189690148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146859 (or 146857 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 189690148 is about 13772.8046526479. The cubic root of 189690148 is about 574.5770278147.

The spelling of 189690148 in words is "one hundred eighty-nine million, six hundred ninety thousand, one hundred forty-eight".