1427826797 has 4 divisors (see below), whose sum is σ = 1432700220. Its totient is φ = 1422953376.

The previous prime is 1427826779. The next prime is 1427826823. The reversal of 1427826797 is 7976287241.

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 703893961 + 723932836 = 26531^2 + 26906^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427826797 - 2¹² = 1427822701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427826767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2436272 + ... + 2436857.

It is an arithmetic number, because the mean of its divisors is an integer number (358175055).

Almost surely, 2^1427826797 is an apocalyptic number.

It is an amenable number.

1427826797 is a deficient number, since it is larger than the sum of its proper divisors (4873423).

1427826797 is an equidigital number, since it uses as much as digits as its factorization.

1427826797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873422.

The product of its digits is 2370816, while the sum is 53.

The square root of 1427826797 is about 37786.5954671759. The cubic root of 1427826797 is about 1126.0521638310.

The spelling of 1427826797 in words is "one billion, four hundred twenty-seven million, eight hundred twenty-six thousand, seven hundred ninety-seven".