1161100600 has 96 divisors (see below), whose sum is σ = 2953538640. Its totient is φ = 420992000.

The previous prime is 1161100547. The next prime is 1161100609. The reversal of 1161100600 is 60011611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161100609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1145694 + ... + 1146706.

Almost surely, 2^1161100600 is an apocalyptic number.

1161100600 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 1161100600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1476769320).

1161100600 is an abundant number, since it is smaller than the sum of its proper divisors (1792438040).

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

1161100600 is a wasteful number, since it uses less digits than its factorization.

1161100600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1552 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1161100600 is about 34074.9262655108. The cubic root of 1161100600 is about 1051.0497739873.

It can be divided in two parts, 1161 and 100600, that added together give a square (101761 = 319²).

The spelling of 1161100600 in words is "one billion, one hundred sixty-one million, one hundred thousand, six hundred".