1390327265 has 4 divisors (see below), whose sum is σ = 1668392724. Its totient is φ = 1112261808.

The previous prime is 1390327259. The next prime is 1390327297. The reversal of 1390327265 is 5627230931.

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 1052613136 + 337714129 = 32444^2 + 18377^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390327265 - 2⁴ = 1390327249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139032722 + ... + 139032731.

It is an arithmetic number, because the mean of its divisors is an integer number (417098181).

Almost surely, 2^1390327265 is an apocalyptic number.

It is an amenable number.

1390327265 is a deficient number, since it is larger than the sum of its proper divisors (278065459).

1390327265 is an equidigital number, since it uses as much as digits as its factorization.

1390327265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278065458.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 1390327265 is about 37287.0924717924. The cubic root of 1390327265 is about 1116.1066091314.

The spelling of 1390327265 in words is "one billion, three hundred ninety million, three hundred twenty-seven thousand, two hundred sixty-five".