144491894 has 8 divisors (see below), whose sum is σ = 216792480. Its totient is φ = 72227736.

The previous prime is 144491881. The next prime is 144491909. The reversal of 144491894 is 498194441.

144491894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5492 + ... + 17864.

It is an arithmetic number, because the mean of its divisors is an integer number (27099060).

Almost surely, 2^144491894 is an apocalyptic number.

144491894 is a deficient number, since it is larger than the sum of its proper divisors (72300586).

144491894 is a wasteful number, since it uses less digits than its factorization.

144491894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18214.

The product of its digits is 165888, while the sum is 44.

The square root of 144491894 is about 12020.4781102916. The cubic root of 144491894 is about 524.7444186059.

The spelling of 144491894 in words is "one hundred forty-four million, four hundred ninety-one thousand, eight hundred ninety-four".