1430144645 has 4 divisors (see below), whose sum is σ = 1716173580. Its totient is φ = 1144115712.

The previous prime is 1430144641. The next prime is 1430144647. The reversal of 1430144645 is 5464410341.

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 149793121 + 1280351524 = 12239^2 + 35782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430144645 - 2² = 1430144641 is a prime.

It is a super-3 number, since 3×1430144645³ (a number of 28 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 143014460 + ... + 143014469.

It is an arithmetic number, because the mean of its divisors is an integer number (429043395).

Almost surely, 2^1430144645 is an apocalyptic number.

It is an amenable number.

1430144645 is a deficient number, since it is larger than the sum of its proper divisors (286028935).

1430144645 is an equidigital number, since it uses as much as digits as its factorization.

1430144645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286028934.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 1430144645 is about 37817.2532714897. The cubic root of 1430144645 is about 1126.6611561631.

Adding to 1430144645 its reverse (5464410341), we get a palindrome (6894554986).

The spelling of 1430144645 in words is "one billion, four hundred thirty million, one hundred forty-four thousand, six hundred forty-five".