485491851 has 24 divisors (see below), whose sum is σ = 756603120. Its totient is φ = 298213056.

The previous prime is 485491847. The next prime is 485491859. The reversal of 485491851 is 158194584.

It is a happy number.

485491851 is a `hidden beast` number, since 4 + 85 + 491 + 85 + 1 = 666.

It is not a de Polignac number, because 485491851 - 2² = 485491847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 485491797 and 485491806.

It is not an unprimeable number, because it can be changed into a prime (485491859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65145 + ... + 72213.

It is an arithmetic number, because the mean of its divisors is an integer number (31525130).

Almost surely, 2^485491851 is an apocalyptic number.

485491851 is a deficient number, since it is larger than the sum of its proper divisors (271111269).

485491851 is a wasteful number, since it uses less digits than its factorization.

485491851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675 (or 7672 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 485491851 is about 22033.8796175344. The cubic root of 485491851 is about 785.9483047795.

The spelling of 485491851 in words is "four hundred eighty-five million, four hundred ninety-one thousand, eight hundred fifty-one".