908078081 has 2 divisors, whose sum is σ = 908078082. Its totient is φ = 908078080.

The previous prime is 908078047. The next prime is 908078177. The reversal of 908078081 is 180870809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868186225 + 39891856 = 29465^2 + 6316^2 .

It is a cyclic number.

It is not a de Polignac number, because 908078081 - 2¹⁴ = 908061697 is a prime.

It is a super-2 number, since 2×908078081² = 1649211602385285122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (908078021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454039040 + 454039041.

It is an arithmetic number, because the mean of its divisors is an integer number (454039041).

Almost surely, 2^908078081 is an apocalyptic number.

It is an amenable number.

908078081 is a deficient number, since it is larger than the sum of its proper divisors (1).

908078081 is an equidigital number, since it uses as much as digits as its factorization.

908078081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 908078081 is about 30134.3339232843. Note that the first 3 decimals coincide. The cubic root of 908078081 is about 968.3694151725.

The spelling of 908078081 in words is "nine hundred eight million, seventy-eight thousand, eighty-one".