1440563138 has 8 divisors (see below), whose sum is σ = 2469536832. Its totient is φ = 617384196.

The previous prime is 1440563123. The next prime is 1440563171. The reversal of 1440563138 is 8313650441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1440563098 and 1440563107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51448670 + ... + 51448697.

It is an arithmetic number, because the mean of its divisors is an integer number (308692104).

Almost surely, 2^1440563138 is an apocalyptic number.

1440563138 is a deficient number, since it is larger than the sum of its proper divisors (1028973694).

1440563138 is a wasteful number, since it uses less digits than its factorization.

1440563138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102897376.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1440563138 is about 37954.7511913858. The cubic root of 1440563138 is about 1129.3904191245.

The spelling of 1440563138 in words is "one billion, four hundred forty million, five hundred sixty-three thousand, one hundred thirty-eight".