144189790 has 16 divisors (see below), whose sum is σ = 262459440. Its totient is φ = 57027520.

The previous prime is 144189779. The next prime is 144189797. The reversal of 144189790 is 97981441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144189797) 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, 80116 + ... + 81895.

It is an arithmetic number, because the mean of its divisors is an integer number (16403715).

Almost surely, 2^144189790 is an apocalyptic number.

144189790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144189790 is a deficient number, since it is larger than the sum of its proper divisors (118269650).

144189790 is a wasteful number, since it uses less digits than its factorization.

144189790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162107.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 144189790 is about 12007.9053127513. The cubic root of 144189790 is about 524.3784511340.

The spelling of 144189790 in words is "one hundred forty-four million, one hundred eighty-nine thousand, seven hundred ninety".