1440563137 has 4 divisors (see below), whose sum is σ = 1551375700. Its totient is φ = 1329750576.

The previous prime is 1440563123. The next prime is 1440563171. The reversal of 1440563137 is 7313650441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 273042576 + 1167520561 = 16524^2 + 34169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440563137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440563237) 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 3 ways as a sum of consecutive naturals, for example, 55406262 + ... + 55406287.

It is an arithmetic number, because the mean of its divisors is an integer number (387843925).

Almost surely, 2^1440563137 is an apocalyptic number.

It is an amenable number.

1440563137 is a deficient number, since it is larger than the sum of its proper divisors (110812563).

1440563137 is a wasteful number, since it uses less digits than its factorization.

1440563137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110812562.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1440563137 is about 37954.7511782122. The cubic root of 1440563137 is about 1129.3904188632.

The spelling of 1440563137 in words is "one billion, four hundred forty million, five hundred sixty-three thousand, one hundred thirty-seven".