144971838 has 24 divisors (see below), whose sum is σ = 342661176. Its totient is φ = 43930800.

The previous prime is 144971837. The next prime is 144971851. The reversal of 144971838 is 838179441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 144971793 and 144971802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144971831) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 365893 + ... + 366288.

It is an arithmetic number, because the mean of its divisors is an integer number (14277549).

Almost surely, 2^144971838 is an apocalyptic number.

144971838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

144971838 is an abundant number, since it is smaller than the sum of its proper divisors (197689338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144971838 is a wasteful number, since it uses less digits than its factorization.

144971838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732200 (or 732197 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 144971838 is about 12040.4251586063. The cubic root of 144971838 is about 525.3247731985.

The spelling of 144971838 in words is "one hundred forty-four million, nine hundred seventy-one thousand, eight hundred thirty-eight".