1196245981 has 8 divisors (see below), whose sum is σ = 1367475200. Its totient is φ = 1025101008.

The previous prime is 1196245961. The next prime is 1196245991. The reversal of 1196245981 is 1895426911.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1196245981 - 2¹³ = 1196237789 is a prime.

It is a super-2 number, since 2×1196245981² = 2862008894117304722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1196245901) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13060 + ... + 50626.

It is an arithmetic number, because the mean of its divisors is an integer number (170934400).

Almost surely, 2^1196245981 is an apocalyptic number.

It is an amenable number.

1196245981 is a deficient number, since it is larger than the sum of its proper divisors (171229219).

1196245981 is an equidigital number, since it uses as much as digits as its factorization.

1196245981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42123.

The product of its digits is 155520, while the sum is 46.

The square root of 1196245981 is about 34586.7891108730. The cubic root of 1196245981 is about 1061.5492892891.

The spelling of 1196245981 in words is "one billion, one hundred ninety-six million, two hundred forty-five thousand, nine hundred eighty-one".