1129312008 has 48 divisors (see below), whose sum is σ = 3336606000. Its totient is φ = 342215520.

The previous prime is 1129311947. The next prime is 1129312069. The reversal of 1129312008 is 8002139211.

It is an interprime number because it is at equal distance from previous prime (1129311947) and next prime (1129312069).

It is a super-2 number, since 2×1129312008² = 2550691222825984128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 712158 + ... + 713741.

It is an arithmetic number, because the mean of its divisors is an integer number (69512625).

Almost surely, 2^1129312008 is an apocalyptic number.

1129312008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1129312008 is an abundant number, since it is smaller than the sum of its proper divisors (2207293992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129312008 is a wasteful number, since it uses less digits than its factorization.

1129312008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425922 (or 1425915 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1129312008 is about 33605.2378060326. The cubic root of 1129312008 is about 1041.3690082536.

The spelling of 1129312008 in words is "one billion, one hundred twenty-nine million, three hundred twelve thousand, eight".