1204275978 has 16 divisors (see below), whose sum is σ = 2676168960. Its totient is φ = 401425308.

The previous prime is 1204275977. The next prime is 1204275983. The reversal of 1204275978 is 8795724021.

It is a happy number.

1204275978 is a `hidden beast` number, since 12 + 0 + 42 + 7 + 597 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1204275977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11150650 + ... + 11150757.

It is an arithmetic number, because the mean of its divisors is an integer number (167260560).

Almost surely, 2^1204275978 is an apocalyptic number.

1204275978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1204275978 is an abundant number, since it is smaller than the sum of its proper divisors (1471892982).

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

1204275978 is a wasteful number, since it uses less digits than its factorization.

1204275978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22301418 (or 22301412 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1204275978 is about 34702.6796948017. The cubic root of 1204275978 is about 1063.9192686829.

Adding to 1204275978 its reverse (8795724021), we get a palindrome (9999999999).

The spelling of 1204275978 in words is "one billion, two hundred four million, two hundred seventy-five thousand, nine hundred seventy-eight".