189148772 has 12 divisors (see below), whose sum is σ = 335951280. Its totient is φ = 93162696.

The previous prime is 189148769. The next prime is 189148777. The reversal of 189148772 is 277841981.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (189148777) 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 3 ways as a sum of consecutive naturals, for example, 352622 + ... + 353157.

It is an arithmetic number, because the mean of its divisors is an integer number (27995940).

Almost surely, 2^189148772 is an apocalyptic number.

It is an amenable number.

189148772 is a deficient number, since it is larger than the sum of its proper divisors (146802508).

189148772 is a wasteful number, since it uses less digits than its factorization.

189148772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705850 (or 705848 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 189148772 is about 13753.1368058345. The cubic root of 189148772 is about 574.0298923758.

The spelling of 189148772 in words is "one hundred eighty-nine million, one hundred forty-eight thousand, seven hundred seventy-two".