144618481 has 8 divisors (see below), whose sum is σ = 173977280. Its totient is φ = 117434448.

The previous prime is 144618479. The next prime is 144618547. The reversal of 144618481 is 184816441.

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

It is a cyclic number.

It is not a de Polignac number, because 144618481 - 2¹ = 144618479 is a prime.

It is a super-2 number, since 2×144618481² = 41829010093494722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144618481.

It is not an unprimeable number, because it can be changed into a prime (144618401) 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, 543546 + ... + 543811.

It is an arithmetic number, because the mean of its divisors is an integer number (21747160).

Almost surely, 2^144618481 is an apocalyptic number.

It is an amenable number.

144618481 is a deficient number, since it is larger than the sum of its proper divisors (29358799).

144618481 is a wasteful number, since it uses less digits than its factorization.

144618481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087383.

The product of its digits is 24576, while the sum is 37.

The square root of 144618481 is about 12025.7424303034. The cubic root of 144618481 is about 524.8976138963.

The spelling of 144618481 in words is "one hundred forty-four million, six hundred eighteen thousand, four hundred eighty-one".