144261645 has 48 divisors (see below), whose sum is σ = 258066816. Its totient is φ = 68745600.

The previous prime is 144261641. The next prime is 144261671. The reversal of 144261645 is 546162441.

It is not a de Polignac number, because 144261645 - 2² = 144261641 is a prime.

It is a super-3 number, since 3×144261645³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144261641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 110064 + ... + 111366.

It is an arithmetic number, because the mean of its divisors is an integer number (5376392).

Almost surely, 2^144261645 is an apocalyptic number.

144261645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144261645 is a deficient number, since it is larger than the sum of its proper divisors (113805171).

144261645 is a wasteful number, since it uses less digits than its factorization.

144261645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1383 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 144261645 is about 12010.8969273739. The cubic root of 144261645 is about 524.4655422666.

The spelling of 144261645 in words is "one hundred forty-four million, two hundred sixty-one thousand, six hundred forty-five".