1163049720 has 128 divisors (see below), whose sum is σ = 4013452800. Its totient is φ = 264116736.

The previous prime is 1163049689. The next prime is 1163049721. The reversal of 1163049720 is 279403611.

It is a super-3 number, since 3×1163049720³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163049721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127471 + ... + 136289.

It is an arithmetic number, because the mean of its divisors is an integer number (31355100).

Almost surely, 2^1163049720 is an apocalyptic number.

1163049720 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 1163049720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2006726400).

1163049720 is an abundant number, since it is smaller than the sum of its proper divisors (2850403080).

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

1163049720 is a wasteful number, since it uses less digits than its factorization.

1163049720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8997 (or 8993 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1163049720 is about 34103.5147748733. The cubic root of 1163049720 is about 1051.6375717125.

The spelling of 1163049720 in words is "one billion, one hundred sixty-three million, forty-nine thousand, seven hundred twenty".