144591764 has 6 divisors (see below), whose sum is σ = 253035594. Its totient is φ = 72295880.

The previous prime is 144591763. The next prime is 144591793. The reversal of 144591764 is 467195441.

It can be written as a sum of positive squares in only one way, i.e., 102860164 + 41731600 = 10142^2 + 6460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144591763) 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 as a sum of consecutive naturals, namely, 18073967 + ... + 18073974.

It is an arithmetic number, because the mean of its divisors is an integer number (42172599).

Almost surely, 2^144591764 is an apocalyptic number.

It is an amenable number.

144591764 is a deficient number, since it is larger than the sum of its proper divisors (108443830).

144591764 is a wasteful number, since it uses less digits than its factorization.

144591764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36147945 (or 36147943 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 144591764 is about 12024.6315536070. The cubic root of 144591764 is about 524.8652884905.

The spelling of 144591764 in words is "one hundred forty-four million, five hundred ninety-one thousand, seven hundred sixty-four".