144989378 has 24 divisors (see below), whose sum is σ = 232711248. Its totient is φ = 67708872.

The previous prime is 144989363. The next prime is 144989381. The reversal of 144989378 is 873989441.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43901 + ... + 47087.

It is an arithmetic number, because the mean of its divisors is an integer number (9696302).

Almost surely, 2^144989378 is an apocalyptic number.

144989378 is a deficient number, since it is larger than the sum of its proper divisors (87721870).

144989378 is a wasteful number, since it uses less digits than its factorization.

144989378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278 (or 3255 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 144989378 is about 12041.1535161711. The cubic root of 144989378 is about 525.3459585198.

The spelling of 144989378 in words is "one hundred forty-four million, nine hundred eighty-nine thousand, three hundred seventy-eight".