140554189 has 4 divisors (see below), whose sum is σ = 140583424. Its totient is φ = 140524956.

The previous prime is 140554171. The next prime is 140554199. The reversal of 140554189 is 981455041.

140554189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 981455041 = 7 ⋅140207863.

It is a cyclic number.

It is not a de Polignac number, because 140554189 - 2⁷ = 140554061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140554129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5517 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (35145856).

Almost surely, 2^140554189 is an apocalyptic number.

It is an amenable number.

140554189 is a deficient number, since it is larger than the sum of its proper divisors (29235).

140554189 is an equidigital number, since it uses as much as digits as its factorization.

140554189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29234.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 140554189 is about 11855.5551957721. Note that the first 3 decimals coincide. The cubic root of 140554189 is about 519.9336564768.

The spelling of 140554189 in words is "one hundred forty million, five hundred fifty-four thousand, one hundred eighty-nine".