1428748865 has 8 divisors (see below), whose sum is σ = 1717910208. Its totient is φ = 1140724720.

The previous prime is 1428748861. The next prime is 1428748873. The reversal of 1428748865 is 5688478241.

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

It is not a de Polignac number, because 1428748865 - 2² = 1428748861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428748861) 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, 281531 + ... + 286560.

It is an arithmetic number, because the mean of its divisors is an integer number (214738776).

Almost surely, 2^1428748865 is an apocalyptic number.

It is an amenable number.

1428748865 is a deficient number, since it is larger than the sum of its proper divisors (289161343).

1428748865 is an equidigital number, since it uses as much as digits as its factorization.

1428748865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568599.

The product of its digits is 3440640, while the sum is 53.

The square root of 1428748865 is about 37798.7944913591. The cubic root of 1428748865 is about 1126.2945072403.

The spelling of 1428748865 in words is "one billion, four hundred twenty-eight million, seven hundred forty-eight thousand, eight hundred sixty-five".