461801985 has 32 divisors (see below), whose sum is σ = 756667008. Its totient is φ = 240414720.

The previous prime is 461801971. The next prime is 461801999. The reversal of 461801985 is 589108164.

It is an interprime number because it is at equal distance from previous prime (461801971) and next prime (461801999).

It is not a de Polignac number, because 461801985 - 2⁴ = 461801969 is a prime.

It is a super-2 number, since 2×461801985² = 426522146699880450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166369 + ... + 169121.

It is an arithmetic number, because the mean of its divisors is an integer number (23645844).

Almost surely, 2^461801985 is an apocalyptic number.

It is an amenable number.

461801985 is a deficient number, since it is larger than the sum of its proper divisors (294865023).

461801985 is a wasteful number, since it uses less digits than its factorization.

461801985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3025.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 461801985 is about 21489.5785207621. The cubic root of 461801985 is about 772.9509437586.

The spelling of 461801985 in words is "four hundred sixty-one million, eight hundred one thousand, nine hundred eighty-five".