189044380 has 24 divisors (see below), whose sum is σ = 453706848. Its totient is φ = 64815168.

The previous prime is 189044363. The next prime is 189044381. The reversal of 189044380 is 83440981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189044381) 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 7 ways as a sum of consecutive naturals, for example, 675019 + ... + 675298.

It is an arithmetic number, because the mean of its divisors is an integer number (18904452).

Almost surely, 2^189044380 is an apocalyptic number.

189044380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189044380 is an abundant number, since it is smaller than the sum of its proper divisors (264662468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189044380 is a wasteful number, since it uses less digits than its factorization.

189044380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350333 (or 1350331 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 189044380 is about 13749.3410751207. The cubic root of 189044380 is about 573.9242697745.

The spelling of 189044380 in words is "one hundred eighty-nine million, forty-four thousand, three hundred eighty".