2134775681 has 2 divisors, whose sum is σ = 2134775682. Its totient is φ = 2134775680.

The previous prime is 2134775677. The next prime is 2134775729. The reversal of 2134775681 is 1865774312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2089952656 + 44823025 = 45716^2 + 6695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2134775681 - 2² = 2134775677 is a prime.

It is a super-2 number, since 2×2134775681² = 9114534416378027522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2134775611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067387840 + 1067387841.

It is an arithmetic number, because the mean of its divisors is an integer number (1067387841).

Almost surely, 2^2134775681 is an apocalyptic number.

It is an amenable number.

2134775681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2134775681 is an equidigital number, since it uses as much as digits as its factorization.

2134775681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 2134775681 is about 46203.6327684307. The cubic root of 2134775681 is about 1287.6092331491.

The spelling of 2134775681 in words is "two billion, one hundred thirty-four million, seven hundred seventy-five thousand, six hundred eighty-one".