1230806761 has 2 divisors, whose sum is σ = 1230806762. Its totient is φ = 1230806760.

The previous prime is 1230806743. The next prime is 1230806771. The reversal of 1230806761 is 1676080321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1097265625 + 133541136 = 33125^2 + 11556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230806761 - 2¹¹ = 1230804713 is a prime.

It is a super-2 number, since 2×1230806761² = 3029770565846622242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1230806711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615403380 + 615403381.

It is an arithmetic number, because the mean of its divisors is an integer number (615403381).

Almost surely, 2^1230806761 is an apocalyptic number.

It is an amenable number.

1230806761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230806761 is an equidigital number, since it uses as much as digits as its factorization.

1230806761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1230806761 is about 35082.8556562889. The cubic root of 1230806761 is about 1071.6754724312.

The spelling of 1230806761 in words is "one billion, two hundred thirty million, eight hundred six thousand, seven hundred sixty-one".