1440544650 has 48 divisors (see below), whose sum is σ = 3582267744. Its totient is φ = 383100480.

The previous prime is 1440544613. The next prime is 1440544663. The reversal of 1440544650 is 564450441.

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 23 ways as a sum of consecutive naturals, for example, 43077 + ... + 68823.

It is an arithmetic number, because the mean of its divisors is an integer number (74630578).

Almost surely, 2^1440544650 is an apocalyptic number.

1440544650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440544650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791133872).

1440544650 is an abundant number, since it is smaller than the sum of its proper divisors (2141723094).

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

1440544650 is a wasteful number, since it uses less digits than its factorization.

1440544650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26135 (or 26130 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 1440544650 is about 37954.5076374335. The cubic root of 1440544650 is about 1129.3855876206.

The spelling of 1440544650 in words is "one billion, four hundred forty million, five hundred forty-four thousand, six hundred fifty".