1214143985 has 16 divisors (see below), whose sum is σ = 1583132160. Its totient is φ = 890507520.

The previous prime is 1214143979. The next prime is 1214144027. The reversal of 1214143985 is 5893414121.

It is not a de Polignac number, because 1214143985 - 2⁸ = 1214143729 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203192 + ... + 209081.

It is an arithmetic number, because the mean of its divisors is an integer number (98945760).

Almost surely, 2^1214143985 is an apocalyptic number.

It is an amenable number.

1214143985 is a deficient number, since it is larger than the sum of its proper divisors (368988175).

1214143985 is a wasteful number, since it uses less digits than its factorization.

1214143985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412328.

The product of its digits is 34560, while the sum is 38.

The square root of 1214143985 is about 34844.5689455330. The cubic root of 1214143985 is about 1066.8173354333.

The spelling of 1214143985 in words is "one billion, two hundred fourteen million, one hundred forty-three thousand, nine hundred eighty-five".