281980063 has 2 divisors, whose sum is σ = 281980064. Its totient is φ = 281980062.

The previous prime is 281980043. The next prime is 281980073. The reversal of 281980063 is 360089182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 281980063 - 2⁵ = 281980031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281980033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140990031 + 140990032.

It is an arithmetic number, because the mean of its divisors is an integer number (140990032).

Almost surely, 2^281980063 is an apocalyptic number.

281980063 is a deficient number, since it is larger than the sum of its proper divisors (1).

281980063 is an equidigital number, since it uses as much as digits as its factorization.

281980063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 281980063 is about 16792.2619977179. The cubic root of 281980063 is about 655.7517643154.

The spelling of 281980063 in words is "two hundred eighty-one million, nine hundred eighty thousand, sixty-three".