1173191040 has 640 divisors, whose sum is σ = 4958521920. Its totient is φ = 258785280.

The previous prime is 1173191039. The next prime is 1173191057. The reversal of 1173191040 is 401913711.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1173190995 and 1173191013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19232610 + ... + 19232670.

Almost surely, 2^1173191040 is an apocalyptic number.

1173191040 is a gapful number since it is divisible by the number (10) 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 1173191040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2479260960).

1173191040 is an abundant number, since it is smaller than the sum of its proper divisors (3785330880).

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

1173191040 is an equidigital number, since it uses as much as digits as its factorization.

1173191040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1173191040 is about 34251.8764449482. The cubic root of 1173191040 is about 1054.6853474919.

The spelling of 1173191040 in words is "one billion, one hundred seventy-three million, one hundred ninety-one thousand, forty".