2435978081 has 2 divisors, whose sum is σ = 2435978082. Its totient is φ = 2435978080.

The previous prime is 2435978071. The next prime is 2435978123. The reversal of 2435978081 is 1808795342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2264237056 + 171741025 = 47584^2 + 13105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2435978081 - 2¹⁸ = 2435715937 is a prime.

It is a super-2 number, since 2×2435978081² = 11867978422224885122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2435978021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1217989040 + 1217989041.

It is an arithmetic number, because the mean of its divisors is an integer number (1217989041).

Almost surely, 2^2435978081 is an apocalyptic number.

It is an amenable number.

2435978081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2435978081 is an equidigital number, since it uses as much as digits as its factorization.

2435978081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 2435978081 is about 49355.6286658371. The cubic root of 2435978081 is about 1345.5229985165.

The spelling of 2435978081 in words is "two billion, four hundred thirty-five million, nine hundred seventy-eight thousand, eighty-one".