1208138833 has 8 divisors (see below), whose sum is σ = 1318271040. Its totient is φ = 1098056880.

The previous prime is 1208138803. The next prime is 1208138839. The reversal of 1208138833 is 3388318021.

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 1208138833 - 2²⁹ = 671267921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1208138792 and 1208138801.

It is not an unprimeable number, because it can be changed into a prime (1208138839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52291 + ... + 71767.

It is an arithmetic number, because the mean of its divisors is an integer number (164783880).

Almost surely, 2^1208138833 is an apocalyptic number.

It is an amenable number.

1208138833 is a deficient number, since it is larger than the sum of its proper divisors (110132207).

1208138833 is a wasteful number, since it uses less digits than its factorization.

1208138833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25127.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 1208138833 is about 34758.2915719401. The cubic root of 1208138833 is about 1065.0556027602.

It can be divided in two parts, 1208 and 138833, that added together give a palindrome (140041).

The spelling of 1208138833 in words is "one billion, two hundred eight million, one hundred thirty-eight thousand, eight hundred thirty-three".