1440378108 has 144 divisors (see below), whose sum is σ = 4177293120. Its totient is φ = 414554112.

The previous prime is 1440378097. The next prime is 1440378109. The reversal of 1440378108 is 8018730441.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440378109) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1566873 + ... + 1567791.

It is an arithmetic number, because the mean of its divisors is an integer number (29008980).

Almost surely, 2^1440378108 is an apocalyptic number.

1440378108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440378108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2088646560).

1440378108 is an abundant number, since it is smaller than the sum of its proper divisors (2736915012).

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

1440378108 is a wasteful number, since it uses less digits than its factorization.

1440378108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1440378108 is about 37952.3136053654. The cubic root of 1440378108 is about 1129.3420630219.

The spelling of 1440378108 in words is "one billion, four hundred forty million, three hundred seventy-eight thousand, one hundred eight".