804551538 has 16 divisors (see below), whose sum is σ = 1838975040. Its totient is φ = 229871856.

The previous prime is 804551533. The next prime is 804551549. The reversal of 804551538 is 835155408.

It is a junction number, because it is equal to n+sod(n) for n = 804551496 and 804551505.

It is not an unprimeable number, because it can be changed into a prime (804551533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9577953 + ... + 9578036.

It is an arithmetic number, because the mean of its divisors is an integer number (114935940).

Almost surely, 2^804551538 is an apocalyptic number.

804551538 is an abundant number, since it is smaller than the sum of its proper divisors (1034423502).

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

804551538 is a wasteful number, since it uses less digits than its factorization.

804551538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19156001.

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 804551538 is about 28364.6177129183. The cubic root of 804551538 is about 930.0749690981.

The spelling of 804551538 in words is "eight hundred four million, five hundred fifty-one thousand, five hundred thirty-eight".