189285451 has 4 divisors (see below), whose sum is σ = 194401312. Its totient is φ = 184169592.

The previous prime is 189285449. The next prime is 189285533. The reversal of 189285451 is 154582981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189285451 - 2¹ = 189285449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189285398 and 189285407.

It is not an unprimeable number, because it can be changed into a prime (189285431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2557875 + ... + 2557948.

It is an arithmetic number, because the mean of its divisors is an integer number (48600328).

Almost surely, 2^189285451 is an apocalyptic number.

189285451 is a deficient number, since it is larger than the sum of its proper divisors (5115861).

189285451 is an equidigital number, since it uses as much as digits as its factorization.

189285451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115860.

The product of its digits is 115200, while the sum is 43.

The square root of 189285451 is about 13758.1049203733. The cubic root of 189285451 is about 574.1681238510.

The spelling of 189285451 in words is "one hundred eighty-nine million, two hundred eighty-five thousand, four hundred fifty-one".