144856915 has 24 divisors (see below), whose sum is σ = 211048992. Its totient is φ = 93480960.

The previous prime is 144856913. The next prime is 144856919. The reversal of 144856915 is 519658441.

It is not a de Polignac number, because 144856915 - 2¹ = 144856913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144856913) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2955 + ... + 17275.

It is an arithmetic number, because the mean of its divisors is an integer number (8793708).

Almost surely, 2^144856915 is an apocalyptic number.

144856915 is a deficient number, since it is larger than the sum of its proper divisors (66192077).

144856915 is a wasteful number, since it uses less digits than its factorization.

144856915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14367 (or 14350 counting only the distinct ones).

The product of its digits is 172800, while the sum is 43.

The square root of 144856915 is about 12035.6518311224. The cubic root of 144856915 is about 525.1859235672.

The spelling of 144856915 in words is "one hundred forty-four million, eight hundred fifty-six thousand, nine hundred fifteen".