1171973964 has 144 divisors (see below), whose sum is σ = 3305073408. Its totient is φ = 322019712.

The previous prime is 1171973951. The next prime is 1171973977. The reversal of 1171973964 is 4693791711.

It is an interprime number because it is at equal distance from previous prime (1171973951) and next prime (1171973977).

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 47 ways as a sum of consecutive naturals, for example, 2240607 + ... + 2241129.

Almost surely, 2^1171973964 is an apocalyptic number.

1171973964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1171973964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1652536704).

1171973964 is an abundant number, since it is smaller than the sum of its proper divisors (2133099444).

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

1171973964 is a wasteful number, since it uses less digits than its factorization.

1171973964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 675 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 1171973964 is about 34234.1052752953. The cubic root of 1171973964 is about 1054.3205088257.

The spelling of 1171973964 in words is "one billion, one hundred seventy-one million, nine hundred seventy-three thousand, nine hundred sixty-four".