461921649 has 8 divisors (see below), whose sum is σ = 703880640. Its totient is φ = 263955216.

The previous prime is 461921641. The next prime is 461921699. The reversal of 461921649 is 946129164.

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

It is not a de Polignac number, because 461921649 - 2³ = 461921641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 461921649.

It is not an unprimeable number, because it can be changed into a prime (461921641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10998114 + ... + 10998155.

It is an arithmetic number, because the mean of its divisors is an integer number (87985080).

Almost surely, 2^461921649 is an apocalyptic number.

It is an amenable number.

461921649 is a deficient number, since it is larger than the sum of its proper divisors (241958991).

461921649 is a wasteful number, since it uses less digits than its factorization.

461921649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21996279.

The product of its digits is 93312, while the sum is 42.

The square root of 461921649 is about 21492.3625737144. The cubic root of 461921649 is about 773.0177013854.

The spelling of 461921649 in words is "four hundred sixty-one million, nine hundred twenty-one thousand, six hundred forty-nine".