1009538834 has 8 divisors (see below), whose sum is σ = 1529301708. Its totient is φ = 499771600.

The previous prime is 1009538833. The next prime is 1009538851. The reversal of 1009538834 is 4388359001.

It can be written as a sum of positive squares in 2 ways, for example, as 818131609 + 191407225 = 28603^2 + 13835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1009538791 and 1009538800.

It is not an unprimeable number, because it can be changed into a prime (1009538833) 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, 2498657 + ... + 2499060.

Almost surely, 2^1009538834 is an apocalyptic number.

1009538834 is a deficient number, since it is larger than the sum of its proper divisors (519762874).

1009538834 is a wasteful number, since it uses less digits than its factorization.

1009538834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997820.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1009538834 is about 31773.2408482358. The cubic root of 1009538834 is about 1003.1695546428.

The spelling of 1009538834 in words is "one billion, nine million, five hundred thirty-eight thousand, eight hundred thirty-four".