1440130552 has 16 divisors (see below), whose sum is σ = 3085994160. Its totient is φ = 617198784.

The previous prime is 1440130543. The next prime is 1440130603. The reversal of 1440130552 is 2550310441.

It is a happy number.

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, 12858253 + ... + 12858364.

It is an arithmetic number, because the mean of its divisors is an integer number (192874635).

Almost surely, 2^1440130552 is an apocalyptic number.

It is an amenable number.

1440130552 is an abundant number, since it is smaller than the sum of its proper divisors (1645863608).

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

1440130552 is a wasteful number, since it uses less digits than its factorization.

1440130552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25716630 (or 25716626 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1440130552 is about 37949.0520566720. The cubic root of 1440130552 is about 1129.2773597748.

Adding to 1440130552 its reverse (2550310441), we get a palindrome (3990440993).

The spelling of 1440130552 in words is "one billion, four hundred forty million, one hundred thirty thousand, five hundred fifty-two".