3923135081 has 2 divisors, whose sum is σ = 3923135082. Its totient is φ = 3923135080.

The previous prime is 3923135071. The next prime is 3923135087. The reversal of 3923135081 is 1805313293.

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., 3777208681 + 145926400 = 61459^2 + 12080^2 .

It is a cyclic number.

It is not a de Polignac number, because 3923135081 - 2¹⁴ = 3923118697 is a prime.

It is a super-2 number, since 2×3923135081² = 30781977727545753122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3923135087) 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, 1961567540 + 1961567541.

It is an arithmetic number, because the mean of its divisors is an integer number (1961567541).

Almost surely, 2^3923135081 is an apocalyptic number.

It is an amenable number.

3923135081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923135081 is an equidigital number, since it uses as much as digits as its factorization.

3923135081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 3923135081 is about 62634.9349883913. The cubic root of 3923135081 is about 1577.1672632708.

The spelling of 3923135081 in words is "three billion, nine hundred twenty-three million, one hundred thirty-five thousand, eighty-one".