1166311250 has 60 divisors (see below), whose sum is σ = 2367662418. Its totient is φ = 430560000.

The previous prime is 1166311247. The next prime is 1166311253. The reversal of 1166311250 is 521136611.

It is an interprime number because it is at equal distance from previous prime (1166311247) and next prime (1166311253).

It can be written as a sum of positive squares in 15 ways, for example, as 997233241 + 169078009 = 31579^2 + 13003^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1166311253) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 208490 + ... + 214010.

Almost surely, 2^1166311250 is an apocalyptic number.

1166311250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166311250 is an abundant number, since it is smaller than the sum of its proper divisors (1201351168).

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

1166311250 is an equidigital number, since it uses as much as digits as its factorization.

1166311250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569 (or 5541 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1166311250 is about 34151.2993896279. The cubic root of 1166311250 is about 1052.6196868722.

Adding to 1166311250 its reverse (521136611), we get a palindrome (1687447861).

The spelling of 1166311250 in words is "one billion, one hundred sixty-six million, three hundred eleven thousand, two hundred fifty".