1073813 has 4 divisors (see below), whose sum is σ = 1156428. Its totient is φ = 991200.

The previous prime is 1073803. The next prime is 1073819. The reversal of 1073813 is 3183701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3183701 = 1249 ⋅2549.

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 850084 = 473^2 + 922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073813 - 2²⁰ = 25237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1073819) 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, 41288 + ... + 41313.

It is an arithmetic number, because the mean of its divisors is an integer number (289107).

2^1073813 is an apocalyptic number.

1073813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1073813 is a deficient number, since it is larger than the sum of its proper divisors (82615).

1073813 is an equidigital number, since it uses as much as digits as its factorization.

1073813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82614.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1073813 is about 1036.2494873340. The cubic root of 1073813 is about 102.4022625741.

The spelling of 1073813 in words is "one million, seventy-three thousand, eight hundred thirteen".