6453430385 has 4 divisors (see below), whose sum is σ = 7744116468. Its totient is φ = 5162744304.

The previous prime is 6453430309. The next prime is 6453430397. The reversal of 6453430385 is 5830343546.

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 1714622464 + 4738807921 = 41408^2 + 68839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6453430385 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645343034 + ... + 645343043.

It is an arithmetic number, because the mean of its divisors is an integer number (1936029117).

Almost surely, 2^6453430385 is an apocalyptic number.

It is an amenable number.

6453430385 is a deficient number, since it is larger than the sum of its proper divisors (1290686083).

6453430385 is a wasteful number, since it uses less digits than its factorization.

6453430385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290686082.

The product of its (nonzero) digits is 518400, while the sum is 41.

The square root of 6453430385 is about 80333.2458263700. The cubic root of 6453430385 is about 1861.7879274853.

The spelling of 6453430385 in words is "six billion, four hundred fifty-three million, four hundred thirty thousand, three hundred eighty-five".