189550995 has 16 divisors (see below), whose sum is σ = 310679712. Its totient is φ = 98627840.

The previous prime is 189550993. The next prime is 189551017. The reversal of 189550995 is 599055981.

It is a happy number.

It is not a de Polignac number, because 189550995 - 2¹ = 189550993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189550993) 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 15 ways as a sum of consecutive naturals, for example, 153492 + ... + 154721.

It is an arithmetic number, because the mean of its divisors is an integer number (19417482).

Almost surely, 2^189550995 is an apocalyptic number.

189550995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189550995 is a deficient number, since it is larger than the sum of its proper divisors (121128717).

189550995 is a wasteful number, since it uses less digits than its factorization.

189550995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308262.

The product of its (nonzero) digits is 729000, while the sum is 51.

The square root of 189550995 is about 13767.7519951516. The cubic root of 189550995 is about 574.4364939373.

The spelling of 189550995 in words is "one hundred eighty-nine million, five hundred fifty thousand, nine hundred ninety-five".