814521845 has 8 divisors (see below), whose sum is σ = 993993120. Its totient is φ = 640572880.

The previous prime is 814521733. The next prime is 814521863. The reversal of 814521845 is 548125418.

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

It is not a de Polignac number, because 814521845 - 2¹⁰ = 814520821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 814521799 and 814521808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380251 + ... + 1380840.

It is an arithmetic number, because the mean of its divisors is an integer number (124249140).

Almost surely, 2^814521845 is an apocalyptic number.

It is an amenable number.

814521845 is a deficient number, since it is larger than the sum of its proper divisors (179471275).

814521845 is a wasteful number, since it uses less digits than its factorization.

814521845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761155.

The product of its digits is 51200, while the sum is 38.

The square root of 814521845 is about 28539.8290989978. The cubic root of 814521845 is about 933.9011541252.

The spelling of 814521845 in words is "eight hundred fourteen million, five hundred twenty-one thousand, eight hundred forty-five".