144531194 has 16 divisors (see below), whose sum is σ = 222523200. Its totient is φ = 70381344.

The previous prime is 144531173. The next prime is 144531197. The reversal of 144531194 is 491135441.

It is a self number, because there is not a number n which added to its sum of digits gives 144531194.

It is not an unprimeable number, because it can be changed into a prime (144531197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5867 + ... + 17985.

It is an arithmetic number, because the mean of its divisors is an integer number (13907700).

Almost surely, 2^144531194 is an apocalyptic number.

144531194 is a deficient number, since it is larger than the sum of its proper divisors (77992006).

144531194 is a wasteful number, since it uses less digits than its factorization.

144531194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12277.

The product of its digits is 8640, while the sum is 32.

The square root of 144531194 is about 12022.1127095033. The cubic root of 144531194 is about 524.7919889475.

The spelling of 144531194 in words is "one hundred forty-four million, five hundred thirty-one thousand, one hundred ninety-four".