1216168930 has 16 divisors (see below), whose sum is σ = 2284282944. Its totient is φ = 465316720.

The previous prime is 1216168927. The next prime is 1216168939. The reversal of 1216168930 is 398616121.

It is a self number, because there is not a number n which added to its sum of digits gives 1216168930.

It is not an unprimeable number, because it can be changed into a prime (1216168939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2643616 + ... + 2644075.

It is an arithmetic number, because the mean of its divisors is an integer number (142767684).

Almost surely, 2^1216168930 is an apocalyptic number.

1216168930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216168930 is a deficient number, since it is larger than the sum of its proper divisors (1068114014).

1216168930 is a wasteful number, since it uses less digits than its factorization.

1216168930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5287721.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1216168930 is about 34873.6136642018. The cubic root of 1216168930 is about 1067.4100840741.

The spelling of 1216168930 in words is "one billion, two hundred sixteen million, one hundred sixty-eight thousand, nine hundred thirty".