1145646380 has 12 divisors (see below), whose sum is σ = 2405857440. Its totient is φ = 458258544.

The previous prime is 1145646379. The next prime is 1145646389. The reversal of 1145646380 is 836465411.

It is not an unprimeable number, because it can be changed into a prime (1145646389) 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, 28641140 + ... + 28641179.

It is an arithmetic number, because the mean of its divisors is an integer number (200488120).

Almost surely, 2^1145646380 is an apocalyptic number.

1145646380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145646380 is an abundant number, since it is smaller than the sum of its proper divisors (1260211060).

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

1145646380 is a wasteful number, since it uses less digits than its factorization.

1145646380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57282328 (or 57282326 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1145646380 is about 33847.3984229217. The cubic root of 1145646380 is about 1046.3657820857.

The spelling of 1145646380 in words is "one billion, one hundred forty-five million, six hundred forty-six thousand, three hundred eighty".