1208118813 has 24 divisors (see below), whose sum is σ = 1777254528. Its totient is φ = 729432000.

The previous prime is 1208118799. The next prime is 1208118823. The reversal of 1208118813 is 3188118021.

It is not a de Polignac number, because 1208118813 - 2⁶ = 1208118749 is a prime.

It is a super-3 number, since 3×1208118813³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208118823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92233 + ... + 104513.

It is an arithmetic number, because the mean of its divisors is an integer number (74052272).

Almost surely, 2^1208118813 is an apocalyptic number.

It is an amenable number.

1208118813 is a deficient number, since it is larger than the sum of its proper divisors (569135715).

1208118813 is a wasteful number, since it uses less digits than its factorization.

1208118813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12577 (or 12566 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 33.

The square root of 1208118813 is about 34758.0035819090. The cubic root of 1208118813 is about 1065.0497197357.

It can be divided in two parts, 1208 and 118813, that added together give a palindrome (120021).

The spelling of 1208118813 in words is "one billion, two hundred eight million, one hundred eighteen thousand, eight hundred thirteen".