1171564896 has 48 divisors (see below), whose sum is σ = 3174571008. Its totient is φ = 377923200.

The previous prime is 1171564883. The next prime is 1171564897. The reversal of 1171564896 is 6984651711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171564897) by changing a digit.

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, 193860 + ... + 199811.

It is an arithmetic number, because the mean of its divisors is an integer number (66136896).

Almost surely, 2^1171564896 is an apocalyptic number.

1171564896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1171564896 is an abundant number, since it is smaller than the sum of its proper divisors (2003006112).

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

1171564896 is a wasteful number, since it uses less digits than its factorization.

1171564896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393715 (or 393707 counting only the distinct ones).

The product of its digits is 362880, while the sum is 48.

The square root of 1171564896 is about 34228.1301855652. The cubic root of 1171564896 is about 1054.1978272121.

The spelling of 1171564896 in words is "one billion, one hundred seventy-one million, five hundred sixty-four thousand, eight hundred ninety-six".