144761638 has 16 divisors (see below), whose sum is σ = 248482080. Its totient is φ = 61960896.

The previous prime is 144761629. The next prime is 144761657. The reversal of 144761638 is 836167441.

It is a self number, because there is not a number n which added to its sum of digits gives 144761638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5370 + ... + 17842.

It is an arithmetic number, because the mean of its divisors is an integer number (15530130).

Almost surely, 2^144761638 is an apocalyptic number.

144761638 is a deficient number, since it is larger than the sum of its proper divisors (103720442).

144761638 is a wasteful number, since it uses less digits than its factorization.

144761638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13311.

The product of its digits is 96768, while the sum is 40.

The square root of 144761638 is about 12031.6930645691. The cubic root of 144761638 is about 525.0707544851.

The spelling of 144761638 in words is "one hundred forty-four million, seven hundred sixty-one thousand, six hundred thirty-eight".