140320189 has 2 divisors, whose sum is σ = 140320190. Its totient is φ = 140320188.

The previous prime is 140320157. The next prime is 140320237. The reversal of 140320189 is 981023041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137663289 + 2656900 = 11733^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 140320189 - 2⁵ = 140320157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140320109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70160094 + 70160095.

It is an arithmetic number, because the mean of its divisors is an integer number (70160095).

Almost surely, 2^140320189 is an apocalyptic number.

It is an amenable number.

140320189 is a deficient number, since it is larger than the sum of its proper divisors (1).

140320189 is an equidigital number, since it uses as much as digits as its factorization.

140320189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 140320189 is about 11845.6822935617. The cubic root of 140320189 is about 519.6449610486.

The spelling of 140320189 in words is "one hundred forty million, three hundred twenty thousand, one hundred eighty-nine".