1145591140 has 48 divisors (see below), whose sum is σ = 2426360832. Its totient is φ = 454329216.

The previous prime is 1145591137. The next prime is 1145591191. The reversal of 1145591140 is 411955411.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770297 + ... + 1770943.

It is an arithmetic number, because the mean of its divisors is an integer number (50549184).

Almost surely, 2^1145591140 is an apocalyptic number.

1145591140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145591140 is an abundant number, since it is smaller than the sum of its proper divisors (1280769692).

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

1145591140 is a wasteful number, since it uses less digits than its factorization.

1145591140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 1145591140 is about 33846.5823976365. The cubic root of 1145591140 is about 1046.3489641636.

The spelling of 1145591140 in words is "one billion, one hundred forty-five million, five hundred ninety-one thousand, one hundred forty".