813409016 has 24 divisors (see below), whose sum is σ = 1774145520. Its totient is φ = 348603696.

The previous prime is 813408989. The next prime is 813409021. The reversal of 813409016 is 610904318.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1037120 + ... + 1037903.

It is an arithmetic number, because the mean of its divisors is an integer number (73922730).

Almost surely, 2^813409016 is an apocalyptic number.

It is an amenable number.

813409016 is an abundant number, since it is smaller than the sum of its proper divisors (960736504).

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

813409016 is a wasteful number, since it uses less digits than its factorization.

813409016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075043 (or 2075032 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 813409016 is about 28520.3263655941. The cubic root of 813409016 is about 933.4756505202.

The spelling of 813409016 in words is "eight hundred thirteen million, four hundred nine thousand, sixteen".