1197867578 has 16 divisors (see below), whose sum is σ = 1901283840. Its totient is φ = 564436800.

The previous prime is 1197867557. The next prime is 1197867653. The reversal of 1197867578 is 8757687911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75263 + ... + 89778.

It is an arithmetic number, because the mean of its divisors is an integer number (118830240).

Almost surely, 2^1197867578 is an apocalyptic number.

1197867578 is a deficient number, since it is larger than the sum of its proper divisors (703416262).

1197867578 is a wasteful number, since it uses less digits than its factorization.

1197867578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165253.

The product of its digits is 5927040, while the sum is 59.

The square root of 1197867578 is about 34610.2236051719. The cubic root of 1197867578 is about 1062.0287413768.

The spelling of 1197867578 in words is "one billion, one hundred ninety-seven million, eight hundred sixty-seven thousand, five hundred seventy-eight".