1440313144 has 16 divisors (see below), whose sum is σ = 2701319400. Its totient is φ = 719961312.

The previous prime is 1440313099. The next prime is 1440313157. The reversal of 1440313144 is 4413130441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9754 + ... + 54550.

Almost surely, 2^1440313144 is an apocalyptic number.

It is an amenable number.

1440313144 is a deficient number, since it is larger than the sum of its proper divisors (1261006256).

1440313144 is a wasteful number, since it uses less digits than its factorization.

1440313144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48822 (or 48818 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1440313144 is about 37951.4577322137. The cubic root of 1440313144 is about 1129.3250842207.

Adding to 1440313144 its reverse (4413130441), we get a palindrome (5853443585).

The spelling of 1440313144 in words is "one billion, four hundred forty million, three hundred thirteen thousand, one hundred forty-four".