1340144445 has 16 divisors (see below), whose sum is σ = 2151002880. Its totient is φ = 712486464.

The previous prime is 1340144437. The next prime is 1340144447. The reversal of 1340144445 is 5444410431.

It is not a de Polignac number, because 1340144445 - 2³ = 1340144437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340144447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136165 + ... + 145674.

It is an arithmetic number, because the mean of its divisors is an integer number (134437680).

Almost surely, 2^1340144445 is an apocalyptic number.

1340144445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340144445 is a deficient number, since it is larger than the sum of its proper divisors (810858435).

1340144445 is a wasteful number, since it uses less digits than its factorization.

1340144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282164.

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 1340144445 is about 36607.9833506300. The cubic root of 1340144445 is about 1102.5133836642.

Adding to 1340144445 its reverse (5444410431), we get a palindrome (6784554876).

The spelling of 1340144445 in words is "one billion, three hundred forty million, one hundred forty-four thousand, four hundred forty-five".