1613143 has 4 divisors (see below), whose sum is σ = 1843600. Its totient is φ = 1382688.

The previous prime is 1613141. The next prime is 1613149. The reversal of 1613143 is 3413161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413161 = 607 ⋅5623.

It is a cyclic number.

It is not a de Polignac number, because 1613143 - 2¹ = 1613141 is a prime.

It is an Ulam number.

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 1613143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613141) 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, 115218 + ... + 115231.

It is an arithmetic number, because the mean of its divisors is an integer number (460900).

2^1613143 is an apocalyptic number.

1613143 is a deficient number, since it is larger than the sum of its proper divisors (230457).

1613143 is an equidigital number, since it uses as much as digits as its factorization.

1613143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230456.

The product of its digits is 216, while the sum is 19.

The square root of 1613143 is about 1270.0956656882. The cubic root of 1613143 is about 117.2800896584.

The spelling of 1613143 in words is "one million, six hundred thirteen thousand, one hundred forty-three".