144138583 has 4 divisors (see below), whose sum is σ = 144971928. Its totient is φ = 143305240.

The previous prime is 144138571. The next prime is 144138611. The reversal of 144138583 is 385831441.

144138583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 385831441 = 1567 ⋅246223.

It is a cyclic number.

It is not a de Polignac number, because 144138583 - 2⁵ = 144138551 is a prime.

It is a super-2 number, since 2×144138583² = 41551862218495778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144138983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416413 + ... + 416758.

It is an arithmetic number, because the mean of its divisors is an integer number (36242982).

Almost surely, 2^144138583 is an apocalyptic number.

144138583 is a deficient number, since it is larger than the sum of its proper divisors (833345).

144138583 is an equidigital number, since it uses as much as digits as its factorization.

144138583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833344.

The product of its digits is 46080, while the sum is 37.

The square root of 144138583 is about 12005.7729030663. The cubic root of 144138583 is about 524.3163685444.

The spelling of 144138583 in words is "one hundred forty-four million, one hundred thirty-eight thousand, five hundred eighty-three".