1613663161 has 8 divisors (see below), whose sum is σ = 1772019648. Its totient is φ = 1457250000.

The previous prime is 1613663159. The next prime is 1613663189.

1613663161 is nontrivially palindromic in base 10.

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 1613663161 - 2¹ = 1613663159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1613663101) 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, 484090 + ... + 487411.

It is an arithmetic number, because the mean of its divisors is an integer number (221502456).

Almost surely, 2^1613663161 is an apocalyptic number.

1613663161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1613663161 is a deficient number, since it is larger than the sum of its proper divisors (158356487).

1613663161 is a wasteful number, since it uses less digits than its factorization.

1613663161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971663.

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

The square root of 1613663161 is about 40170.4264478235. The cubic root of 1613663161 is about 1172.9269403235.

It can be divided in two parts, 16136 and 63161, that added together give a palindrome (79297).

The spelling of 1613663161 in words is "one billion, six hundred thirteen million, six hundred sixty-three thousand, one hundred sixty-one".