20001430489 has 8 divisors (see below), whose sum is σ = 20059325768. Its totient is φ = 19943573760.

The previous prime is 20001430459. The next prime is 20001430541. The reversal of 20001430489 is 98403410002.

It can be written as a sum of positive squares in 4 ways, for example, as 15180211264 + 4821219225 = 123208^2 + 69435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20001430489 - 2⁵ = 20001430457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20001430489.

It is not an unprimeable number, because it can be changed into a prime (20001430429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269319 + ... + 1284979.

It is an arithmetic number, because the mean of its divisors is an integer number (2507415721).

Almost surely, 2^20001430489 is an apocalyptic number.

It is an amenable number.

20001430489 is a deficient number, since it is larger than the sum of its proper divisors (57895279).

20001430489 is a wasteful number, since it uses less digits than its factorization.

20001430489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19275.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 20001430489 in words is "twenty billion, one million, four hundred thirty thousand, four hundred eighty-nine".