1430144646 has 64 divisors (see below), whose sum is σ = 3503305728. Its totient is φ = 380274048.

The previous prime is 1430144641. The next prime is 1430144647. The reversal of 1430144646 is 6464410341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430144641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15736 + ... + 55748.

It is an arithmetic number, because the mean of its divisors is an integer number (54739152).

Almost surely, 2^1430144646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1430144646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751652864).

1430144646 is an abundant number, since it is smaller than the sum of its proper divisors (2073161082).

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

1430144646 is a wasteful number, since it uses less digits than its factorization.

1430144646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40085.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 1430144646 is about 37817.2532847112. The cubic root of 1430144646 is about 1126.6611564257.

Adding to 1430144646 its reverse (6464410341), we get a palindrome (7894554987).

The spelling of 1430144646 in words is "one billion, four hundred thirty million, one hundred forty-four thousand, six hundred forty-six".