144519978 has 16 divisors (see below), whose sum is σ = 291742560. Its totient is φ = 47722896.

The previous prime is 144519937. The next prime is 144519989. The reversal of 144519978 is 879915441.

It is a super-2 number, since 2×144519978² = 41772048082240968, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111913 + ... + 113196.

It is an arithmetic number, because the mean of its divisors is an integer number (18233910).

Almost surely, 2^144519978 is an apocalyptic number.

144519978 is an abundant number, since it is smaller than the sum of its proper divisors (147222582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144519978 is a wasteful number, since it uses less digits than its factorization.

144519978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225221.

The product of its digits is 362880, while the sum is 48.

The square root of 144519978 is about 12021.6462267029. The cubic root of 144519978 is about 524.7784135177.

The spelling of 144519978 in words is "one hundred forty-four million, five hundred nineteen thousand, nine hundred seventy-eight".