189145326 has 16 divisors (see below), whose sum is σ = 382037328. Its totient is φ = 62424000.

The previous prime is 189145303. The next prime is 189145331. The reversal of 189145326 is 623541981.

It is a congruent number.

It is an unprimeable number.

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, 155455 + ... + 156666.

It is an arithmetic number, because the mean of its divisors is an integer number (23877333).

Almost surely, 2^189145326 is an apocalyptic number.

189145326 is an abundant number, since it is smaller than the sum of its proper divisors (192892002).

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

189145326 is a wasteful number, since it uses less digits than its factorization.

189145326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312227.

The product of its digits is 51840, while the sum is 39.

The square root of 189145326 is about 13753.0115247534. The cubic root of 189145326 is about 574.0264063738.

The spelling of 189145326 in words is "one hundred eighty-nine million, one hundred forty-five thousand, three hundred twenty-six".