1111229978 has 8 divisors (see below), whose sum is σ = 1675572480. Its totient is φ = 552705820.

The previous prime is 1111229971. The next prime is 1111229993. The reversal of 1111229978 is 8799221111.

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

It is not an unprimeable number, because it can be changed into a prime (1111229971) 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, 1454108 + ... + 1454871.

It is an arithmetic number, because the mean of its divisors is an integer number (209446560).

Almost surely, 2^1111229978 is an apocalyptic number.

1111229978 is a deficient number, since it is larger than the sum of its proper divisors (564342502).

1111229978 is a wasteful number, since it uses less digits than its factorization.

1111229978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2909172.

The product of its digits is 18144, while the sum is 41.

The square root of 1111229978 is about 33335.1162889827. The cubic root of 1111229978 is about 1035.7811020404.

The spelling of 1111229978 in words is "one billion, one hundred eleven million, two hundred twenty-nine thousand, nine hundred seventy-eight".