809801148 has 24 divisors (see below), whose sum is σ = 2034885328. Its totient is φ = 249169536.

The previous prime is 809801131. The next prime is 809801183. The reversal of 809801148 is 841108908.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2595361 + ... + 2595672.

Almost surely, 2^809801148 is an apocalyptic number.

It is an amenable number.

809801148 is an abundant number, since it is smaller than the sum of its proper divisors (1225084180).

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

809801148 is a wasteful number, since it uses less digits than its factorization.

809801148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5191053 (or 5191051 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 809801148 is about 28457.0052535399. The cubic root of 809801148 is about 932.0934641358.

It can be divided in two parts, 80980 and 1148, that added together give a palindrome (82128).

The spelling of 809801148 in words is "eight hundred nine million, eight hundred one thousand, one hundred forty-eight".