1145889250 has 128 divisors (see below), whose sum is σ = 2510217216. Its totient is φ = 387072000.

The previous prime is 1145889247. The next prime is 1145889253. The reversal of 1145889250 is 529885411.

It is an interprime number because it is at equal distance from previous prime (1145889247) and next prime (1145889253).

It is a junction number, because it is equal to n+sod(n) for n = 1145889197 and 1145889206.

It is not an unprimeable number, because it can be changed into a prime (1145889253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5937154 + ... + 5937346.

It is an arithmetic number, because the mean of its divisors is an integer number (19611072).

Almost surely, 2^1145889250 is an apocalyptic number.

1145889250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145889250 is an abundant number, since it is smaller than the sum of its proper divisors (1364327966).

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

1145889250 is a wasteful number, since it uses less digits than its factorization.

1145889250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 1145889250 is about 33850.9859531447. The cubic root of 1145889250 is about 1046.4397179022.

The spelling of 1145889250 in words is "one billion, one hundred forty-five million, eight hundred eighty-nine thousand, two hundred fifty".