1172994000 has 160 divisors (see below), whose sum is σ = 3812006016. Its totient is φ = 310297600.

The previous prime is 1172993963. The next prime is 1172994019. The reversal of 1172994000 is 4992711.

It is a Cunningham number, because it is equal to 34249²-1.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 821287 + ... + 822713.

Almost surely, 2^1172994000 is an apocalyptic number.

1172994000 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 1172994000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906003008).

1172994000 is an abundant number, since it is smaller than the sum of its proper divisors (2639012016).

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

1172994000 is a wasteful number, since it uses less digits than its factorization.

1172994000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 1172994000 is about 34248.9999854010. Note that the first 4 decimals coincide. The cubic root of 1172994000 is about 1054.6262986160.

The spelling of 1172994000 in words is "one billion, one hundred seventy-two million, nine hundred ninety-four thousand".