1166501490 has 128 divisors (see below), whose sum is σ = 3542980608. Its totient is φ = 238740480.

The previous prime is 1166501489. The next prime is 1166501503. The reversal of 1166501490 is 941056611.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151002 + ... + 158538.

It is an arithmetic number, because the mean of its divisors is an integer number (27679536).

Almost surely, 2^1166501490 is an apocalyptic number.

1166501490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166501490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771490304).

1166501490 is an abundant number, since it is smaller than the sum of its proper divisors (2376479118).

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

1166501490 is a wasteful number, since it uses less digits than its factorization.

1166501490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1166501490 is about 34154.0845287939. The cubic root of 1166501490 is about 1052.6769155872.

The spelling of 1166501490 in words is "one billion, one hundred sixty-six million, five hundred one thousand, four hundred ninety".