1009825835 has 4 divisors (see below), whose sum is σ = 1211791008. Its totient is φ = 807860664.

The previous prime is 1009825819. The next prime is 1009825847. The reversal of 1009825835 is 5385289001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1009825835 - 2⁴ = 1009825819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1009825792 and 1009825801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100982579 + ... + 100982588.

It is an arithmetic number, because the mean of its divisors is an integer number (302947752).

Almost surely, 2^1009825835 is an apocalyptic number.

1009825835 is a deficient number, since it is larger than the sum of its proper divisors (201965173).

1009825835 is an equidigital number, since it uses as much as digits as its factorization.

1009825835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201965172.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 1009825835 is about 31777.7569220988. The cubic root of 1009825835 is about 1003.2646090633.

The spelling of 1009825835 in words is "one billion, nine million, eight hundred twenty-five thousand, eight hundred thirty-five".