461661953 has 2 divisors, whose sum is σ = 461661954. Its totient is φ = 461661952.

The previous prime is 461661929. The next prime is 461661997. The reversal of 461661953 is 359166164.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319980544 + 141681409 = 17888^2 + 11903^2 .

It is a cyclic number.

It is not a de Polignac number, because 461661953 - 2¹⁰ = 461660929 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 461661953.

It is not a weakly prime, because it can be changed into another prime (461661923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230830976 + 230830977.

It is an arithmetic number, because the mean of its divisors is an integer number (230830977).

Almost surely, 2^461661953 is an apocalyptic number.

It is an amenable number.

461661953 is a deficient number, since it is larger than the sum of its proper divisors (1).

461661953 is an equidigital number, since it uses as much as digits as its factorization.

461661953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 461661953 is about 21486.3201363100. The cubic root of 461661953 is about 772.8728086760.

The spelling of 461661953 in words is "four hundred sixty-one million, six hundred sixty-one thousand, nine hundred fifty-three".