1214871978 has 8 divisors (see below), whose sum is σ = 2429743968. Its totient is φ = 404957324.

The previous prime is 1214871961. The next prime is 1214871979. The reversal of 1214871978 is 8791784121.

It is a sphenic number, since it is the product of 3 distinct primes.

1214871978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1214871979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101239326 + ... + 101239337.

It is an arithmetic number, because the mean of its divisors is an integer number (303717996).

Almost surely, 2^1214871978 is an apocalyptic number.

1214871978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1214871978 is a wasteful number, since it uses less digits than its factorization.

1214871978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202478668.

The product of its digits is 225792, while the sum is 48.

The square root of 1214871978 is about 34855.0136709197. The cubic root of 1214871978 is about 1067.0305117924.

The spelling of 1214871978 in words is "one billion, two hundred fourteen million, eight hundred seventy-one thousand, nine hundred seventy-eight".