189249755 has 8 divisors (see below), whose sum is σ = 230823024. Its totient is φ = 148917600.

The previous prime is 189249743. The next prime is 189249811. The reversal of 189249755 is 557942981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189249755 - 2⁸ = 189249499 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309941 + ... + 310550.

It is an arithmetic number, because the mean of its divisors is an integer number (28852878).

Almost surely, 2^189249755 is an apocalyptic number.

189249755 is a deficient number, since it is larger than the sum of its proper divisors (41573269).

189249755 is an equidigital number, since it uses as much as digits as its factorization.

189249755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620557.

The product of its digits is 907200, while the sum is 50.

The square root of 189249755 is about 13756.8075875183. The cubic root of 189249755 is about 574.1320288179.

The spelling of 189249755 in words is "one hundred eighty-nine million, two hundred forty-nine thousand, seven hundred fifty-five".