1173949056 has 192 divisors, whose sum is σ = 3940872000. Its totient is φ = 335301120.

The previous prime is 1173949043. The next prime is 1173949057. The reversal of 1173949056 is 6509493711.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×1173949056² = 2756312772166582272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1173949057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 393651 + ... + 396621.

It is an arithmetic number, because the mean of its divisors is an integer number (20525375).

Almost surely, 2^1173949056 is an apocalyptic number.

1173949056 is a gapful number since it is divisible by the number (16) 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 1173949056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1970436000).

1173949056 is an abundant number, since it is smaller than the sum of its proper divisors (2766922944).

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

1173949056 is an equidigital number, since it uses as much as digits as its factorization.

1173949056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012 (or 2983 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1173949056 is about 34262.9399789335. The cubic root of 1173949056 is about 1054.9124478305.

The spelling of 1173949056 in words is "one billion, one hundred seventy-three million, nine hundred forty-nine thousand, fifty-six".