1172166000 has 160 divisors (see below), whose sum is σ = 3796685568. Its totient is φ = 311123200.

The previous prime is 1172165999. The next prime is 1172166013. The reversal of 1172166000 is 6612711.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2081719 + ... + 2082281.

Almost surely, 2^1172166000 is an apocalyptic number.

1172166000 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 1172166000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1898342784).

1172166000 is an abundant number, since it is smaller than the sum of its proper divisors (2624519568).

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

1172166000 is a wasteful number, since it uses less digits than its factorization.

1172166000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 1172166000 is about 34236.9099072916. The cubic root of 1172166000 is about 1054.3780915712.

Adding to 1172166000 its reverse (6612711), we get a palindrome (1178778711).

The spelling of 1172166000 in words is "one billion, one hundred seventy-two million, one hundred sixty-six thousand".