1965013 has 4 divisors (see below), whose sum is σ = 2080620. Its totient is φ = 1849408.

The previous prime is 1964987. The next prime is 1965077. The reversal of 1965013 is 3105691.

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 1643524 + 321489 = 1282^2 + 567^2 .

It is a cyclic number.

It is not a de Polignac number, because 1965013 - 2⁵ = 1964981 is a prime.

It is a super-2 number, since 2×1965013² = 7722552180338, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1965413) 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, 57778 + ... + 57811.

It is an arithmetic number, because the mean of its divisors is an integer number (520155).

2^1965013 is an apocalyptic number.

It is an amenable number.

1965013 is a deficient number, since it is larger than the sum of its proper divisors (115607).

1965013 is a wasteful number, since it uses less digits than its factorization.

1965013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115606.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1965013 is about 1401.7892138264. The cubic root of 1965013 is about 125.2530978526.

The spelling of 1965013 in words is "one million, nine hundred sixty-five thousand, thirteen".