2239135081 has 2 divisors, whose sum is σ = 2239135082. Its totient is φ = 2239135080.

The previous prime is 2239135051. The next prime is 2239135111. The reversal of 2239135081 is 1805319322.

It is a balanced prime because it is at equal distance from previous prime (2239135051) and next prime (2239135111).

It can be written as a sum of positive squares in only one way, i.e., 1655187856 + 583947225 = 40684^2 + 24165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239135081 - 2⁵ = 2239135049 is a prime.

It is a super-2 number, since 2×2239135081² = 10027451821929753122, which contains 22 as substring.

It is the 47320-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (2239135051) by changing a digit.

It is a nontrivial repunit in base 47319.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119567540 + 1119567541.

It is an arithmetic number, because the mean of its divisors is an integer number (1119567541).

Almost surely, 2^2239135081 is an apocalyptic number.

It is an amenable number.

2239135081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239135081 is an equidigital number, since it uses as much as digits as its factorization.

2239135081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 2239135081 is about 47319.5000079249. The cubic root of 2239135081 is about 1308.2580971932.

The spelling of 2239135081 in words is "two billion, two hundred thirty-nine million, one hundred thirty-five thousand, eighty-one".