1206253863 has 20 divisors (see below), whose sum is σ = 1828837560. Its totient is φ = 792163152.

The previous prime is 1206253843. The next prime is 1206253891. The reversal of 1206253863 is 3683526021.

It is a happy number.

1206253863 is a `hidden beast` number, since 1 + 2 + 0 + 62 + 538 + 63 = 666.

It is not a de Polignac number, because 1206253863 - 2¹⁶ = 1206188327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206253843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 105708 + ... + 116561.

It is an arithmetic number, because the mean of its divisors is an integer number (91441878).

Almost surely, 2^1206253863 is an apocalyptic number.

1206253863 is a deficient number, since it is larger than the sum of its proper divisors (622583697).

1206253863 is an equidigital number, since it uses as much as digits as its factorization.

1206253863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222348 (or 222339 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1206253863 is about 34731.1655865449. The cubic root of 1206253863 is about 1064.5014051760.

Adding to 1206253863 its reverse (3683526021), we get a palindrome (4889779884).

The spelling of 1206253863 in words is "one billion, two hundred six million, two hundred fifty-three thousand, eight hundred sixty-three".