189307450 has 48 divisors (see below), whose sum is σ = 374976000. Its totient is φ = 70899840.

The previous prime is 189307441. The next prime is 189307453. The reversal of 189307450 is 54703981.

It is not an unprimeable number, because it can be changed into a prime (189307453) 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 23 ways as a sum of consecutive naturals, for example, 83431 + ... + 85669.

It is an arithmetic number, because the mean of its divisors is an integer number (7812000).

Almost surely, 2^189307450 is an apocalyptic number.

189307450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189307450 is a deficient number, since it is larger than the sum of its proper divisors (185668550).

189307450 is a wasteful number, since it uses less digits than its factorization.

189307450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 189307450 is about 13758.9043895217. The cubic root of 189307450 is about 574.1903665101.

The spelling of 189307450 in words is "one hundred eighty-nine million, three hundred seven thousand, four hundred fifty".