1206422863 has 4 divisors (see below), whose sum is σ = 1213647120. Its totient is φ = 1199198608.

The previous prime is 1206422849. The next prime is 1206422869. The reversal of 1206422863 is 3682246021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1206422863 - 2⁵ = 1206422831 is a prime.

It is a super-2 number, since 2×1206422863² = 2910912248738233538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206422869) 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 3 ways as a sum of consecutive naturals, for example, 3611878 + ... + 3612211.

It is an arithmetic number, because the mean of its divisors is an integer number (303411780).

Almost surely, 2^1206422863 is an apocalyptic number.

1206422863 is a deficient number, since it is larger than the sum of its proper divisors (7224257).

1206422863 is an equidigital number, since it uses as much as digits as its factorization.

1206422863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224256.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 1206422863 is about 34733.5984746758. The cubic root of 1206422863 is about 1064.5511161979.

Adding to 1206422863 its reverse (3682246021), we get a palindrome (4888668884).

The spelling of 1206422863 in words is "one billion, two hundred six million, four hundred twenty-two thousand, eight hundred sixty-three".