1161802720 has 96 divisors (see below), whose sum is σ = 2982655872. Its totient is φ = 425091072.

The previous prime is 1161802687. The next prime is 1161802753. The reversal of 1161802720 is 272081611.

It is an interprime number because it is at equal distance from previous prime (1161802687) and next prime (1161802753).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232569 + ... + 237511.

It is an arithmetic number, because the mean of its divisors is an integer number (31069332).

Almost surely, 2^1161802720 is an apocalyptic number.

1161802720 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 1161802720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491327936).

1161802720 is an abundant number, since it is smaller than the sum of its proper divisors (1820853152).

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

1161802720 is a wasteful number, since it uses less digits than its factorization.

1161802720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084 (or 5076 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1161802720 is about 34085.2272986407. The cubic root of 1161802720 is about 1051.2615886420.

The spelling of 1161802720 in words is "one billion, one hundred sixty-one million, eight hundred two thousand, seven hundred twenty".