1161216008 has 128 divisors (see below), whose sum is σ = 2531088000. Its totient is φ = 496005120.

The previous prime is 1161215977. The next prime is 1161216013. The reversal of 1161216008 is 8006121611.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8354003 + ... + 8354141.

It is an arithmetic number, because the mean of its divisors is an integer number (19774125).

Almost surely, 2^1161216008 is an apocalyptic number.

It is an amenable number.

1161216008 is an abundant number, since it is smaller than the sum of its proper divisors (1369871992).

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

1161216008 is a wasteful number, since it uses less digits than its factorization.

1161216008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1161216008 is about 34076.6196680363. The cubic root of 1161216008 is about 1051.0845959868.

Adding to 1161216008 its reverse (8006121611), we get a palindrome (9167337619).

The spelling of 1161216008 in words is "one billion, one hundred sixty-one million, two hundred sixteen thousand, eight".