1616243 has 4 divisors (see below), whose sum is σ = 1618848. Its totient is φ = 1613640.

The previous prime is 1616231. The next prime is 1616269. The reversal of 1616243 is 3426161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1616243 - 2⁴ = 1616227 is a prime.

It is a super-2 number, since 2×1616243² = 5224482870098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (404712).

2^1616243 is an apocalyptic number.

1616243 is a deficient number, since it is larger than the sum of its proper divisors (2605).

1616243 is a wasteful number, since it uses less digits than its factorization.

1616243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604.

The product of its digits is 864, while the sum is 23.

The square root of 1616243 is about 1271.3154604582. The cubic root of 1616243 is about 117.3551678618.

The spelling of 1616243 in words is "one million, six hundred sixteen thousand, two hundred forty-three".