1145297320 has 16 divisors (see below), whose sum is σ = 2576919060. Its totient is φ = 458118912.

The previous prime is 1145297233. The next prime is 1145297339. The reversal of 1145297320 is 237925411.

It is a happy number.

1145297320 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1052483364 + 92813956 = 32442^2 + 9634^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14316177 + ... + 14316256.

Almost surely, 2^1145297320 is an apocalyptic number.

1145297320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145297320 is an abundant number, since it is smaller than the sum of its proper divisors (1431621740).

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

1145297320 is a wasteful number, since it uses less digits than its factorization.

1145297320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28632444 (or 28632440 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1145297320 is about 33842.2416515218. The cubic root of 1145297320 is about 1046.2595010240.

The spelling of 1145297320 in words is "one billion, one hundred forty-five million, two hundred ninety-seven thousand, three hundred twenty".