189215627 has 4 divisors (see below), whose sum is σ = 200345976. Its totient is φ = 178085280.

The previous prime is 189215581. The next prime is 189215629. The reversal of 189215627 is 726512981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189215627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189215629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5565149 + ... + 5565182.

It is an arithmetic number, because the mean of its divisors is an integer number (50086494).

Almost surely, 2^189215627 is an apocalyptic number.

189215627 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

189215627 is a deficient number, since it is larger than the sum of its proper divisors (11130349).

189215627 is a wasteful number, since it uses less digits than its factorization.

189215627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11130348.

The product of its digits is 60480, while the sum is 41.

The square root of 189215627 is about 13755.5671275306. The cubic root of 189215627 is about 574.0975150686.

The spelling of 189215627 in words is "one hundred eighty-nine million, two hundred fifteen thousand, six hundred twenty-seven".