1009435250 has 16 divisors (see below), whose sum is σ = 1889663256. Its totient is φ = 403774000.

The previous prime is 1009435223. The next prime is 1009435279. The reversal of 1009435250 is 525349001.

It can be written as a sum of positive squares in 4 ways, for example, as 120978001 + 888457249 = 10999^2 + 29807^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018621 + ... + 2019120.

Almost surely, 2^1009435250 is an apocalyptic number.

1009435250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1009435250 is a deficient number, since it is larger than the sum of its proper divisors (880228006).

1009435250 is an equidigital number, since it uses as much as digits as its factorization.

1009435250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037758 (or 4037748 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1009435250 is about 31771.6107555157. The cubic root of 1009435250 is about 1003.1352433098.

The spelling of 1009435250 in words is "one billion, nine million, four hundred thirty-five thousand, two hundred fifty".