1153752780 has 96 divisors (see below), whose sum is σ = 3360284928. Its totient is φ = 295545600.

The previous prime is 1153752779. The next prime is 1153752781. The reversal of 1153752780 is 872573511.

It is an interprime number because it is at equal distance from previous prime (1153752779) and next prime (1153752781).

It is a super-2 number, since 2×1153752780² = 2662290954715456800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1153752781) 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, 153715 + ... + 161045.

It is an arithmetic number, because the mean of its divisors is an integer number (35002968).

Almost surely, 2^1153752780 is an apocalyptic number.

1153752780 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 1153752780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680142464).

1153752780 is an abundant number, since it is smaller than the sum of its proper divisors (2206532148).

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

1153752780 is a wasteful number, since it uses less digits than its factorization.

1153752780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7447 (or 7445 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 1153752780 is about 33966.9365707301. The cubic root of 1153752780 is about 1048.8279529775.

The spelling of 1153752780 in words is "one billion, one hundred fifty-three million, seven hundred fifty-two thousand, seven hundred eighty".