1641616617 has 8 divisors (see below), whose sum is σ = 2189404224. Its totient is φ = 1094120048.

The previous prime is 1641616609. The next prime is 1641616621. The reversal of 1641616617 is 7166161461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1641616617 - 2³ = 1641616609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1641612617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59238 + ... + 82415.

It is an arithmetic number, because the mean of its divisors is an integer number (273675528).

Almost surely, 2^1641616617 is an apocalyptic number.

It is an amenable number.

1641616617 is a deficient number, since it is larger than the sum of its proper divisors (547787607).

1641616617 is a wasteful number, since it uses less digits than its factorization.

1641616617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145519.

The product of its digits is 36288, while the sum is 39.

The square root of 1641616617 is about 40516.8683019801. The cubic root of 1641616617 is about 1179.6610673131.

It can be divided in two parts, 16416 and 16617, that added together give a palindrome (33033).

The spelling of 1641616617 in words is "one billion, six hundred forty-one million, six hundred sixteen thousand, six hundred seventeen".