1083620161 has 4 divisors (see below), whose sum is σ = 1166975572. Its totient is φ = 1000264752.

The previous prime is 1083620143. The next prime is 1083620173. The reversal of 1083620161 is 1610263801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1610263801 = 443 ⋅3634907.

It can be written as a sum of positive squares in 2 ways, for example, as 291760561 + 791859600 = 17081^2 + 28140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1083620161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1083623161) 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, 41677686 + ... + 41677711.

It is an arithmetic number, because the mean of its divisors is an integer number (291743893).

Almost surely, 2^1083620161 is an apocalyptic number.

It is an amenable number.

1083620161 is a deficient number, since it is larger than the sum of its proper divisors (83355411).

1083620161 is an equidigital number, since it uses as much as digits as its factorization.

1083620161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83355410.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1083620161 is about 32918.3863668923. The cubic root of 1083620161 is about 1027.1306577015.

Adding to 1083620161 its reverse (1610263801), we get a palindrome (2693883962).

The spelling of 1083620161 in words is "one billion, eighty-three million, six hundred twenty thousand, one hundred sixty-one".