1959813 has 12 divisors (see below), whose sum is σ = 2871648. Its totient is φ = 1287720.

The previous prime is 1959799. The next prime is 1959821. The reversal of 1959813 is 3189591.

It is a happy number.

It is not a de Polignac number, because 1959813 - 2¹⁴ = 1943429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1959833) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 895 + ... + 2172.

It is an arithmetic number, because the mean of its divisors is an integer number (239304).

2^1959813 is an apocalyptic number.

It is an amenable number.

1959813 is a deficient number, since it is larger than the sum of its proper divisors (911835).

1959813 is a wasteful number, since it uses less digits than its factorization.

1959813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144 (or 3141 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 1959813 is about 1399.9332126927. The cubic root of 1959813 is about 125.1425147879.

It can be divided in two parts, 1959 and 813, that added together give a palindrome (2772).

The spelling of 1959813 in words is "one million, nine hundred fifty-nine thousand, eight hundred thirteen".