1616336161 has 4 divisors (see below), whose sum is σ = 1763275824. Its totient is φ = 1469396500.

The previous prime is 1616336147. The next prime is 1616336167.

1616336161 is nontrivially palindromic in base 10.

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 not a de Polignac number, because 1616336161 - 2²¹ = 1614239009 is a prime.

It is a super-2 number, since 2×1616336161² = 5225085170712435842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616336167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73469815 + ... + 73469836.

It is an arithmetic number, because the mean of its divisors is an integer number (440818956).

Almost surely, 2^1616336161 is an apocalyptic number.

1616336161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1616336161 is a deficient number, since it is larger than the sum of its proper divisors (146939663).

1616336161 is a wasteful number, since it uses less digits than its factorization.

1616336161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146939662.

The product of its digits is 11664, while the sum is 34.

The square root of 1616336161 is about 40203.6834257758. The cubic root of 1616336161 is about 1173.5742262066.

The spelling of 1616336161 in words is "one billion, six hundred sixteen million, three hundred thirty-six thousand, one hundred sixty-one".