851454013 has 4 divisors (see below), whose sum is σ = 851821308. Its totient is φ = 851086720.

The previous prime is 851453947. The next prime is 851454017. The reversal of 851454013 is 310454158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450373284 + 401080729 = 21222^2 + 20027^2 .

It is a cyclic number.

It is not a de Polignac number, because 851454013 - 2²⁵ = 817899581 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 (851454017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180148 + ... + 184813.

It is an arithmetic number, because the mean of its divisors is an integer number (212955327).

Almost surely, 2^851454013 is an apocalyptic number.

It is an amenable number.

851454013 is a deficient number, since it is larger than the sum of its proper divisors (367295).

851454013 is a wasteful number, since it uses less digits than its factorization.

851454013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367294.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 851454013 is about 29179.6849366130. The cubic root of 851454013 is about 947.8080629568.

The spelling of 851454013 in words is "eight hundred fifty-one million, four hundred fifty-four thousand, thirteen".