278088983 has 2 divisors, whose sum is σ = 278088984. Its totient is φ = 278088982.

The previous prime is 278088977. The next prime is 278089001. The reversal of 278088983 is 389880872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 278088983 - 2¹⁸ = 277826839 is a prime.

It is a super-3 number, since 3×278088983³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278088953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139044491 + 139044492.

It is an arithmetic number, because the mean of its divisors is an integer number (139044492).

Almost surely, 2^278088983 is an apocalyptic number.

278088983 is a deficient number, since it is larger than the sum of its proper divisors (1).

278088983 is an equidigital number, since it uses as much as digits as its factorization.

278088983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 53.

The square root of 278088983 is about 16676.0002098825. Note that the first 3 decimals coincide. The cubic root of 278088983 is about 652.7215147063.

The spelling of 278088983 in words is "two hundred seventy-eight million, eighty-eight thousand, nine hundred eighty-three".