4866891761 has 2 divisors, whose sum is σ = 4866891762. Its totient is φ = 4866891760.

The previous prime is 4866891751. The next prime is 4866891787. The reversal of 4866891761 is 1671986684.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2758245361 + 2108646400 = 52519^2 + 45920^2 .

It is a cyclic number.

It is not a de Polignac number, because 4866891761 - 2⁶ = 4866891697 is a prime.

It is a super-2 number, since 2×4866891761² = 47373270826579362242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4866891697 and 4866891706.

It is not a weakly prime, because it can be changed into another prime (4866891751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2433445880 + 2433445881.

It is an arithmetic number, because the mean of its divisors is an integer number (2433445881).

Almost surely, 2^4866891761 is an apocalyptic number.

It is an amenable number.

4866891761 is a deficient number, since it is larger than the sum of its proper divisors (1).

4866891761 is an equidigital number, since it uses as much as digits as its factorization.

4866891761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The square root of 4866891761 is about 69763.1117496919. Note that the first 3 decimals coincide. The cubic root of 4866891761 is about 1694.6651399193.

The spelling of 4866891761 in words is "four billion, eight hundred sixty-six million, eight hundred ninety-one thousand, seven hundred sixty-one".