144937538 has 4 divisors (see below), whose sum is σ = 217406310. Its totient is φ = 72468768.

The previous prime is 144937523. The next prime is 144937543. The reversal of 144937538 is 835739441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 88040689 + 56896849 = 9383^2 + 7543^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36234383 + ... + 36234386.

Almost surely, 2^144937538 is an apocalyptic number.

144937538 is a deficient number, since it is larger than the sum of its proper divisors (72468772).

144937538 is an equidigital number, since it uses as much as digits as its factorization.

144937538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72468771.

The product of its digits is 362880, while the sum is 44.

The square root of 144937538 is about 12039.0007060387. Note that the first 3 decimals coincide. The cubic root of 144937538 is about 525.2833397237.

The spelling of 144937538 in words is "one hundred forty-four million, nine hundred thirty-seven thousand, five hundred thirty-eight".