1283728895 has 8 divisors (see below), whose sum is σ = 1540762656. Its totient is φ = 1026791136.

The previous prime is 1283728841. The next prime is 1283728909. The reversal of 1283728895 is 5988273821.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1283728895 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9734 + ... + 51596.

It is an arithmetic number, because the mean of its divisors is an integer number (192595332).

Almost surely, 2^1283728895 is an apocalyptic number.

1283728895 is a deficient number, since it is larger than the sum of its proper divisors (257033761).

1283728895 is an equidigital number, since it uses as much as digits as its factorization.

1283728895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48001.

The product of its digits is 1935360, while the sum is 53.

The square root of 1283728895 is about 35829.1626332517. The cubic root of 1283728895 is about 1086.8203763501.

The spelling of 1283728895 in words is "one billion, two hundred eighty-three million, seven hundred twenty-eight thousand, eight hundred ninety-five".