1617643241 has 4 divisors (see below), whose sum is σ = 1619769684. Its totient is φ = 1615516800.

The previous prime is 1617643217. The next prime is 1617643253. The reversal of 1617643241 is 1423467161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9954025 + 1607689216 = 3155^2 + 40096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1617643241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1617673241) 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, 1062080 + ... + 1063601.

It is an arithmetic number, because the mean of its divisors is an integer number (404942421).

Almost surely, 2^1617643241 is an apocalyptic number.

It is an amenable number.

1617643241 is a deficient number, since it is larger than the sum of its proper divisors (2126443).

1617643241 is an equidigital number, since it uses as much as digits as its factorization.

1617643241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126442.

The product of its digits is 24192, while the sum is 35.

The square root of 1617643241 is about 40219.9358651900. The cubic root of 1617643241 is about 1173.8904851085.

The spelling of 1617643241 in words is "one billion, six hundred seventeen million, six hundred forty-three thousand, two hundred forty-one".