1145717320 has 64 divisors (see below), whose sum is σ = 2827146240. Its totient is φ = 414412800.

The previous prime is 1145717317. The next prime is 1145717323. The reversal of 1145717320 is 237175411.

It is an interprime number because it is at equal distance from previous prime (1145717317) and next prime (1145717323).

It is not an unprimeable number, because it can be changed into a prime (1145717323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77224 + ... + 90856.

It is an arithmetic number, because the mean of its divisors is an integer number (44174160).

Almost surely, 2^1145717320 is an apocalyptic number.

1145717320 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 1145717320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1413573120).

1145717320 is an abundant number, since it is smaller than the sum of its proper divisors (1681428920).

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

1145717320 is a wasteful number, since it uses less digits than its factorization.

1145717320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13846 (or 13842 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1145717320 is about 33848.4463454381. The cubic root of 1145717320 is about 1046.3873791096.

The spelling of 1145717320 in words is "one billion, one hundred forty-five million, seven hundred seventeen thousand, three hundred twenty".