1613355823 has 2 divisors, whose sum is σ = 1613355824. Its totient is φ = 1613355822.

The previous prime is 1613355763. The next prime is 1613355827. The reversal of 1613355823 is 3285533161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1613355823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1613355827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806677911 + 806677912.

It is an arithmetic number, because the mean of its divisors is an integer number (806677912).

Almost surely, 2^1613355823 is an apocalyptic number.

1613355823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613355823 is an equidigital number, since it uses as much as digits as its factorization.

1613355823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 1613355823 is about 40166.6008395035. The cubic root of 1613355823 is about 1172.8524704429.

Adding to 1613355823 its reverse (3285533161), we get a palindrome (4898888984).

The spelling of 1613355823 in words is "one billion, six hundred thirteen million, three hundred fifty-five thousand, eight hundred twenty-three".