1229022978 has 8 divisors (see below), whose sum is σ = 2458045968. Its totient is φ = 409674324.

The previous prime is 1229022941. The next prime is 1229022997. The reversal of 1229022978 is 8792209221.

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

1229022978 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

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, 102418576 + ... + 102418587.

It is an arithmetic number, because the mean of its divisors is an integer number (307255746).

Almost surely, 2^1229022978 is an apocalyptic number.

1229022978 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.

1229022978 is a wasteful number, since it uses less digits than its factorization.

1229022978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204837168.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1229022978 is about 35057.4240069062. The cubic root of 1229022978 is about 1071.1575030275.

The spelling of 1229022978 in words is "one billion, two hundred twenty-nine million, twenty-two thousand, nine hundred seventy-eight".