811928413 has 8 divisors (see below), whose sum is σ = 816076800. Its totient is φ = 807791280.

The previous prime is 811928357. The next prime is 811928417. The reversal of 811928413 is 314829118.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811928413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811928417) 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, 166788 + ... + 171586.

It is an arithmetic number, because the mean of its divisors is an integer number (102009600).

Almost surely, 2^811928413 is an apocalyptic number.

It is an amenable number.

811928413 is a deficient number, since it is larger than the sum of its proper divisors (4148387).

811928413 is a wasteful number, since it uses less digits than its factorization.

811928413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627.

The product of its digits is 13824, while the sum is 37.

The square root of 811928413 is about 28494.3575642617. The cubic root of 811928413 is about 932.9089219900.

The spelling of 811928413 in words is "eight hundred eleven million, nine hundred twenty-eight thousand, four hundred thirteen".