1613563841 has 4 divisors (see below), whose sum is σ = 1613683632. Its totient is φ = 1613444052.

The previous prime is 1613563793. The next prime is 1613563843. The reversal of 1613563841 is 1483653161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1613563841 - 2¹⁰ = 1613562817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1613563795 and 1613563804.

It is not an unprimeable number, because it can be changed into a prime (1613563843) 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, 36695 + ... + 67628.

It is an arithmetic number, because the mean of its divisors is an integer number (403420908).

Almost surely, 2^1613563841 is an apocalyptic number.

It is an amenable number.

1613563841 is a deficient number, since it is larger than the sum of its proper divisors (119791).

1613563841 is a wasteful number, since it uses less digits than its factorization.

1613563841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119790.

The product of its digits is 51840, while the sum is 38.

The square root of 1613563841 is about 40169.1901959698. The cubic root of 1613563841 is about 1172.9028755131.

The spelling of 1613563841 in words is "one billion, six hundred thirteen million, five hundred sixty-three thousand, eight hundred forty-one".