1206161003 has 8 divisors (see below), whose sum is σ = 1218942816. Its totient is φ = 1193400000.

The previous prime is 1206160997. The next prime is 1206161053. The reversal of 1206161003 is 3001616021.

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 1206161003 - 2⁴ = 1206160987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1206161053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129503 + ... + 138503.

It is an arithmetic number, because the mean of its divisors is an integer number (152367852).

Almost surely, 2^1206161003 is an apocalyptic number.

1206161003 is a deficient number, since it is larger than the sum of its proper divisors (12781813).

1206161003 is a wasteful number, since it uses less digits than its factorization.

1206161003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10405.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1206161003 is about 34729.8287211440. The cubic root of 1206161003 is about 1064.4740886107.

Adding to 1206161003 its reverse (3001616021), we get a palindrome (4207777024).

The spelling of 1206161003 in words is "one billion, two hundred six million, one hundred sixty-one thousand, three".