1145205344 has 24 divisors (see below), whose sum is σ = 2297166480. Its totient is φ = 561798016.

The previous prime is 1145205343. The next prime is 1145205349. The reversal of 1145205344 is 4435025411.

It is a super-2 number, since 2×1145205344² = 2622990559852316672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145205343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335924 + ... + 339315.

It is an arithmetic number, because the mean of its divisors is an integer number (95715270).

Almost surely, 2^1145205344 is an apocalyptic number.

It is an amenable number.

1145205344 is an abundant number, since it is smaller than the sum of its proper divisors (1151961136).

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

1145205344 is an equidigital number, since it uses as much as digits as its factorization.

1145205344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675302 (or 675294 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1145205344 is about 33840.8827308036. The cubic root of 1145205344 is about 1046.2314927685.

The spelling of 1145205344 in words is "one billion, one hundred forty-five million, two hundred five thousand, three hundred forty-four".