1145605320 has 48 divisors (see below), whose sum is σ = 3723218460. Its totient is φ = 305494656.

The previous prime is 1145605303. The next prime is 1145605337. The reversal of 1145605320 is 235065411.

1145605320 is a `hidden beast` number, since 11 + 45 + 605 + 3 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1145605303) and next prime (1145605337).

It can be written as a sum of positive squares in 2 ways, for example, as 1099718244 + 45887076 = 33162^2 + 6774^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1590759 + ... + 1591478.

Almost surely, 2^1145605320 is an apocalyptic number.

1145605320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145605320 is an abundant number, since it is smaller than the sum of its proper divisors (2577613140).

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

1145605320 is a wasteful number, since it uses less digits than its factorization.

1145605320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182254 (or 3182247 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1145605320 is about 33846.7918716087. The cubic root of 1145605320 is about 1046.3532813429.

The spelling of 1145605320 in words is "one billion, one hundred forty-five million, six hundred five thousand, three hundred twenty".