4654821961 has 2 divisors, whose sum is σ = 4654821962. Its totient is φ = 4654821960.

The previous prime is 4654821947. The next prime is 4654821967. The reversal of 4654821961 is 1691284564.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2900468736 + 1754353225 = 53856^2 + 41885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4654821961 is a prime.

It is not a weakly prime, because it can be changed into another prime (4654821967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2327410980 + 2327410981.

It is an arithmetic number, because the mean of its divisors is an integer number (2327410981).

Almost surely, 2^4654821961 is an apocalyptic number.

It is an amenable number.

4654821961 is a deficient number, since it is larger than the sum of its proper divisors (1).

4654821961 is an equidigital number, since it uses as much as digits as its factorization.

4654821961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 46.

The square root of 4654821961 is about 68226.2556571882. The cubic root of 4654821961 is about 1669.6842795412.

The spelling of 4654821961 in words is "four billion, six hundred fifty-four million, eight hundred twenty-one thousand, nine hundred sixty-one".