1613904563 has 2 divisors, whose sum is σ = 1613904564. Its totient is φ = 1613904562.

The previous prime is 1613904529. The next prime is 1613904583. The reversal of 1613904563 is 3654093161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1613904563 - 2¹⁰ = 1613903539 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613904583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806952281 + 806952282.

It is an arithmetic number, because the mean of its divisors is an integer number (806952282).

Almost surely, 2^1613904563 is an apocalyptic number.

1613904563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613904563 is an equidigital number, since it uses as much as digits as its factorization.

1613904563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 1613904563 is about 40173.4310583500. The cubic root of 1613904563 is about 1172.9854268771.

The spelling of 1613904563 in words is "one billion, six hundred thirteen million, nine hundred four thousand, five hundred sixty-three".