1427434865 has 8 divisors (see below), whose sum is σ = 1715719848. Its totient is φ = 1140082560.

The previous prime is 1427434859. The next prime is 1427434927. The reversal of 1427434865 is 5684347241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 161213809 + 1266221056 = 12697^2 + 35584^2 .

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

It is not a de Polignac number, because 1427434865 - 2⁸ = 1427434609 is a prime.

It is a Duffinian 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, 229796 + ... + 235925.

It is an arithmetic number, because the mean of its divisors is an integer number (214464981).

Almost surely, 2^1427434865 is an apocalyptic number.

It is an amenable number.

1427434865 is a deficient number, since it is larger than the sum of its proper divisors (288284983).

1427434865 is an equidigital number, since it uses as much as digits as its factorization.

1427434865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466339.

The product of its digits is 645120, while the sum is 44.

The square root of 1427434865 is about 37781.4089864314. The cubic root of 1427434865 is about 1125.9491223264.

The spelling of 1427434865 in words is "one billion, four hundred twenty-seven million, four hundred thirty-four thousand, eight hundred sixty-five".