189253449 has 128 divisors (see below), whose sum is σ = 375091200. Its totient is φ = 91445760.

The previous prime is 189253447. The next prime is 189253457. The reversal of 189253449 is 944352981.

189253449 is a `hidden beast` number, since 189 + 25 + 3 + 449 = 666.

It is not a de Polignac number, because 189253449 - 2¹ = 189253447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189253447) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2592477 + ... + 2592549.

It is an arithmetic number, because the mean of its divisors is an integer number (2930400).

Almost surely, 2^189253449 is an apocalyptic number.

It is an amenable number.

189253449 is a deficient number, since it is larger than the sum of its proper divisors (185837751).

189253449 is a wasteful number, since it uses less digits than its factorization.

189253449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 166 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 189253449 is about 13756.9418476637. The cubic root of 189253449 is about 574.1357643224.

The spelling of 189253449 in words is "one hundred eighty-nine million, two hundred fifty-three thousand, four hundred forty-nine".