1613374663 has 4 divisors (see below), whose sum is σ = 1650895048. Its totient is φ = 1575854280.

The previous prime is 1613374657. The next prime is 1613374669. The reversal of 1613374663 is 3664733161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3664733161 = 29 ⋅126370109.

It is an interprime number because it is at equal distance from previous prime (1613374657) and next prime (1613374669).

It is a cyclic number.

It is not a de Polignac number, because 1613374663 - 2²¹ = 1611277511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613374669) 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, 18760128 + ... + 18760213.

It is an arithmetic number, because the mean of its divisors is an integer number (412723762).

Almost surely, 2^1613374663 is an apocalyptic number.

1613374663 is a deficient number, since it is larger than the sum of its proper divisors (37520385).

1613374663 is an equidigital number, since it uses as much as digits as its factorization.

1613374663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37520384.

The product of its digits is 163296, while the sum is 40.

The square root of 1613374663 is about 40166.8353620247. The cubic root of 1613374663 is about 1172.8570357625.

The spelling of 1613374663 in words is "one billion, six hundred thirteen million, three hundred seventy-four thousand, six hundred sixty-three".