1427722465 has 16 divisors (see below), whose sum is σ = 1847937168. Its totient is φ = 1052672256.

The previous prime is 1427722433. The next prime is 1427722487. The reversal of 1427722465 is 5642277241.

It can be written as a sum of positive squares in 8 ways, for example, as 543076416 + 884646049 = 23304^2 + 29743^2 .

It is a cyclic number.

It is not a de Polignac number, because 1427722465 - 2⁵ = 1427722433 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 15 ways as a sum of consecutive naturals, for example, 25627 + ... + 59263.

It is an arithmetic number, because the mean of its divisors is an integer number (115496073).

Almost surely, 2^1427722465 is an apocalyptic number.

It is an amenable number.

1427722465 is a deficient number, since it is larger than the sum of its proper divisors (420214703).

1427722465 is a wasteful number, since it uses less digits than its factorization.

1427722465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34308.

The product of its digits is 188160, while the sum is 40.

The square root of 1427722465 is about 37785.2148994815. The cubic root of 1427722465 is about 1126.0247361028.

The spelling of 1427722465 in words is "one billion, four hundred twenty-seven million, seven hundred twenty-two thousand, four hundred sixty-five".