1214812388 has 12 divisors (see below), whose sum is σ = 2152832640. Its totient is φ = 599717352.

The previous prime is 1214812381. The next prime is 1214812397. The reversal of 1214812388 is 8832184121.

It is not an unprimeable number, because it can be changed into a prime (1214812381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1921856 + ... + 1922487.

It is an arithmetic number, because the mean of its divisors is an integer number (179402720).

Almost surely, 2^1214812388 is an apocalyptic number.

It is an amenable number.

1214812388 is a deficient number, since it is larger than the sum of its proper divisors (938020252).

1214812388 is a wasteful number, since it uses less digits than its factorization.

1214812388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3844426 (or 3844424 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 1214812388 is about 34854.1588336313. The cubic root of 1214812388 is about 1067.0130654032.

The spelling of 1214812388 in words is "one billion, two hundred fourteen million, eight hundred twelve thousand, three hundred eighty-eight".