1204959978 has 12 divisors (see below), whose sum is σ = 2610746658. Its totient is φ = 401653320.

The previous prime is 1204959967. The next prime is 1204959991. The reversal of 1204959978 is 8799594021.

1204959978 is a `hidden beast` number, since 1 + 2 + 0 + 49 + 599 + 7 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 951290649 + 253669329 = 30843^2 + 15927^2 .

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 5 ways as a sum of consecutive naturals, for example, 33471093 + ... + 33471128.

Almost surely, 2^1204959978 is an apocalyptic number.

1204959978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1204959978 is an abundant number, since it is smaller than the sum of its proper divisors (1405786680).

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

1204959978 is a wasteful number, since it uses less digits than its factorization.

1204959978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66942229 (or 66942226 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The square root of 1204959978 is about 34712.5334425478. The cubic root of 1204959978 is about 1064.1206574732.

It can be divided in two parts, 12049 and 59978, that added together give a palindrome (72027).

The spelling of 1204959978 in words is "one billion, two hundred four million, nine hundred fifty-nine thousand, nine hundred seventy-eight".