189144023 has 8 divisors (see below), whose sum is σ = 201548592. Its totient is φ = 176881536.

The previous prime is 189144017. The next prime is 189144079. The reversal of 189144023 is 320441981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189144023 - 2¹⁴ = 189127639 is a prime.

It is a super-2 number, since 2×189144023² = 71550922873249058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189144223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32765 + ... + 38102.

It is an arithmetic number, because the mean of its divisors is an integer number (25193574).

Almost surely, 2^189144023 is an apocalyptic number.

189144023 is a deficient number, since it is larger than the sum of its proper divisors (12404569).

189144023 is a wasteful number, since it uses less digits than its factorization.

189144023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71041.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 189144023 is about 13752.9641532289. The cubic root of 189144023 is about 574.0250882372.

The spelling of 189144023 in words is "one hundred eighty-nine million, one hundred forty-four thousand, twenty-three".