2864120081 has 2 divisors, whose sum is σ = 2864120082. Its totient is φ = 2864120080.

The previous prime is 2864120047. The next prime is 2864120089. The reversal of 2864120081 is 1800214682.

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., 2855940481 + 8179600 = 53441^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2864120081 - 2¹⁸ = 2863857937 is a prime.

It is a super-2 number, since 2×2864120081² = 16406367676774893122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2864120089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432060040 + 1432060041.

It is an arithmetic number, because the mean of its divisors is an integer number (1432060041).

Almost surely, 2^2864120081 is an apocalyptic number.

It is an amenable number.

2864120081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2864120081 is an equidigital number, since it uses as much as digits as its factorization.

2864120081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 2864120081 is about 53517.4745386962. The cubic root of 2864120081 is about 1420.1375389161.

The spelling of 2864120081 in words is "two billion, eight hundred sixty-four million, one hundred twenty thousand, eighty-one".