189022390 has 16 divisors (see below), whose sum is σ = 340553808. Its totient is φ = 75539296.

The previous prime is 189022387. The next prime is 189022397. The reversal of 189022390 is 93220981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189022397) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3504 + ... + 19756.

It is an arithmetic number, because the mean of its divisors is an integer number (21284613).

Almost surely, 2^189022390 is an apocalyptic number.

189022390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189022390 is a deficient number, since it is larger than the sum of its proper divisors (151531418).

189022390 is a wasteful number, since it uses less digits than its factorization.

189022390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17423.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 189022390 is about 13748.5413771789. The cubic root of 189022390 is about 573.9020155926.

The spelling of 189022390 in words is "one hundred eighty-nine million, twenty-two thousand, three hundred ninety".