1216699930 has 48 divisors (see below), whose sum is σ = 2282716800. Its totient is φ = 466893504.

The previous prime is 1216699909. The next prime is 1216699973. The reversal of 1216699930 is 399966121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1673227 + ... + 1673953.

It is an arithmetic number, because the mean of its divisors is an integer number (47556600).

Almost surely, 2^1216699930 is an apocalyptic number.

1216699930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216699930 is a deficient number, since it is larger than the sum of its proper divisors (1066016870).

1216699930 is a wasteful number, since it uses less digits than its factorization.

1216699930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 1216699930 is about 34881.2260392320. The cubic root of 1216699930 is about 1067.5654112576.

The spelling of 1216699930 in words is "one billion, two hundred sixteen million, six hundred ninety-nine thousand, nine hundred thirty".