189012308 has 6 divisors (see below), whose sum is σ = 330771546. Its totient is φ = 94506152.

The previous prime is 189012283. The next prime is 189012349. The reversal of 189012308 is 803210981.

It can be written as a sum of positive squares in only one way, i.e., 188842564 + 169744 = 13742^2 + 412^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 23626535 + ... + 23626542.

It is an arithmetic number, because the mean of its divisors is an integer number (55128591).

Almost surely, 2^189012308 is an apocalyptic number.

It is an amenable number.

189012308 is a deficient number, since it is larger than the sum of its proper divisors (141759238).

189012308 is a wasteful number, since it uses less digits than its factorization.

189012308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47253081 (or 47253079 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 189012308 is about 13748.1747152122. The cubic root of 189012308 is about 573.8918118931.

The spelling of 189012308 in words is "one hundred eighty-nine million, twelve thousand, three hundred eight".