1601055611 has 8 divisors (see below), whose sum is σ = 1636239360. Its totient is φ = 1565918568.

The previous prime is 1601055607. The next prime is 1601055613. The reversal of 1601055611 is 1165501061.

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 1601055611 - 2² = 1601055607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601055613) 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, 62780 + ... + 84518.

It is an arithmetic number, because the mean of its divisors is an integer number (204529920).

Almost surely, 2^1601055611 is an apocalyptic number.

1601055611 is a deficient number, since it is larger than the sum of its proper divisors (35183749).

1601055611 is a wasteful number, since it uses less digits than its factorization.

1601055611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23353.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1601055611 is about 40013.1929618220. The cubic root of 1601055611 is about 1169.8642575126.

Adding to 1601055611 its reverse (1165501061), we get a palindrome (2766556672).

The spelling of 1601055611 in words is "one billion, six hundred one million, fifty-five thousand, six hundred eleven".