1613216203 has 4 divisors (see below), whose sum is σ = 1647540000. Its totient is φ = 1578892408.

The previous prime is 1613216093. The next prime is 1613216281. The reversal of 1613216203 is 3026123161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3026123161 = 421 ⋅7187941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1613216203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613211203) 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, 17161828 + ... + 17161921.

It is an arithmetic number, because the mean of its divisors is an integer number (411885000).

Almost surely, 2^1613216203 is an apocalyptic number.

1613216203 is a deficient number, since it is larger than the sum of its proper divisors (34323797).

1613216203 is an equidigital number, since it uses as much as digits as its factorization.

1613216203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34323796.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1613216203 is about 40164.8627907528. The cubic root of 1613216203 is about 1172.8186365373.

Adding to 1613216203 its reverse (3026123161), we get a palindrome (4639339364).

The spelling of 1613216203 in words is "one billion, six hundred thirteen million, two hundred sixteen thousand, two hundred three".