1161510000 has 200 divisors, whose sum is σ = 4285928064. Its totient is φ = 265440000.

The previous prime is 1161509983. The next prime is 1161510011. The reversal of 1161510000 is 151611.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 207235 + ... + 212765.

Almost surely, 2^1161510000 is an apocalyptic number.

1161510000 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 1161510000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142964032).

1161510000 is an abundant number, since it is smaller than the sum of its proper divisors (3124418064).

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

1161510000 is an equidigital number, since it uses as much as digits as its factorization.

1161510000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569 (or 5548 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1161510000 is about 34080.9330858179. The cubic root of 1161510000 is about 1051.1732916260.

Adding to 1161510000 its reverse (151611), we get a palindrome (1161661611).

The spelling of 1161510000 in words is "one billion, one hundred sixty-one million, five hundred ten thousand".