1338445585 has 8 divisors (see below), whose sum is σ = 1649543976. Its totient is φ = 1041816960.

The previous prime is 1338445573. The next prime is 1338445597. The reversal of 1338445585 is 5855448331.

It is an interprime number because it is at equal distance from previous prime (1338445573) and next prime (1338445597).

It can be written as a sum of positive squares in 4 ways, for example, as 764411904 + 574033681 = 27648^2 + 23959^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1338445585 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, 3617236 + ... + 3617605.

It is an arithmetic number, because the mean of its divisors is an integer number (206192997).

Almost surely, 2^1338445585 is an apocalyptic number.

It is an amenable number.

1338445585 is a deficient number, since it is larger than the sum of its proper divisors (311098391).

1338445585 is an equidigital number, since it uses as much as digits as its factorization.

1338445585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234883.

The product of its digits is 1152000, while the sum is 46.

The square root of 1338445585 is about 36584.7725836857. The cubic root of 1338445585 is about 1102.0473125362.

The spelling of 1338445585 in words is "one billion, three hundred thirty-eight million, four hundred forty-five thousand, five hundred eighty-five".