1145485320 has 64 divisors (see below), whose sum is σ = 3927381120. Its totient is φ = 261825024.

The previous prime is 1145485283. The next prime is 1145485321. The reversal of 1145485320 is 235845411.

It is not an unprimeable number, because it can be changed into a prime (1145485321) 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, 680997 + ... + 682676.

It is an arithmetic number, because the mean of its divisors is an integer number (61365330).

Almost surely, 2^1145485320 is an apocalyptic number.

1145485320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145485320 is an abundant number, since it is smaller than the sum of its proper divisors (2781895800).

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

1145485320 is a wasteful number, since it uses less digits than its factorization.

1145485320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363694 (or 1363690 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 1145485320 is about 33845.0191313286. The cubic root of 1145485320 is about 1046.3167455552.

The spelling of 1145485320 in words is "one billion, one hundred forty-five million, four hundred eighty-five thousand, three hundred twenty".