1319965 has 16 divisors (see below), whose sum is σ = 1714608. Its totient is φ = 971776.

The previous prime is 1319963. The next prime is 1320019. The reversal of 1319965 is 5699131.

It can be written as a sum of positive squares in 8 ways, for example, as 267289 + 1052676 = 517^2 + 1026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319965 - 2¹ = 1319963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1319965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4359 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (107163).

2^1319965 is an apocalyptic number.

It is an amenable number.

1319965 is a deficient number, since it is larger than the sum of its proper divisors (394643).

1319965 is a wasteful number, since it uses less digits than its factorization.

1319965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its digits is 7290, while the sum is 34.

The square root of 1319965 is about 1148.8972974117. The cubic root of 1319965 is about 109.6951615036.

The spelling of 1319965 in words is "one million, three hundred nineteen thousand, nine hundred sixty-five".