1171316640 has 96 divisors (see below), whose sum is σ = 3973487616. Its totient is φ = 288322560.

The previous prime is 1171316633. The next prime is 1171316681. The reversal of 1171316640 is 466131711.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1171316640² = 2743965342281779200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1171316598 and 1171316607.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87616 + ... + 100095.

It is an arithmetic number, because the mean of its divisors is an integer number (41390496).

Almost surely, 2^1171316640 is an apocalyptic number.

1171316640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1171316640 is an abundant number, since it is smaller than the sum of its proper divisors (2802170976).

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

1171316640 is a wasteful number, since it uses less digits than its factorization.

1171316640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187742 (or 187734 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1171316640 is about 34224.5035026076. The cubic root of 1171316640 is about 1054.1233600260.

The spelling of 1171316640 in words is "one billion, one hundred seventy-one million, three hundred sixteen thousand, six hundred forty".