461836809 has 56 divisors (see below), whose sum is σ = 807945600. Its totient is φ = 263763864.

The previous prime is 461836801. The next prime is 461836831. The reversal of 461836809 is 908638164.

It is not a de Polignac number, because 461836809 - 2³ = 461836801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461836801) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 249124 + ... + 250970.

It is an arithmetic number, because the mean of its divisors is an integer number (14427600).

Almost surely, 2^461836809 is an apocalyptic number.

461836809 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

461836809 is a deficient number, since it is larger than the sum of its proper divisors (346108791).

461836809 is an frugal number, since it uses more digits than its factorization.

461836809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 461836809 is about 21490.3887586986. The cubic root of 461836809 is about 772.9703724084.

The spelling of 461836809 in words is "four hundred sixty-one million, eight hundred thirty-six thousand, eight hundred nine".