1196881956 has 18 divisors (see below), whose sum is σ = 3025451702. Its totient is φ = 398960640.

The previous prime is 1196881951. The next prime is 1196881979. The reversal of 1196881956 is 6591886911.

It can be written as a sum of positive squares in only one way, i.e., 1194808356 + 2073600 = 34566^2 + 1440^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1196881951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16623325 + ... + 16623396.

Almost surely, 2^1196881956 is an apocalyptic number.

It is an amenable number.

1196881956 is an abundant number, since it is smaller than the sum of its proper divisors (1828569746).

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

1196881956 is a wasteful number, since it uses less digits than its factorization.

1196881956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33246731 (or 33246726 counting only the distinct ones).

The product of its digits is 933120, while the sum is 54.

The square root of 1196881956 is about 34595.9817897975. The cubic root of 1196881956 is about 1061.7373774735.

The spelling of 1196881956 in words is "one billion, one hundred ninety-six million, eight hundred eighty-one thousand, nine hundred fifty-six".