881278493 has 2 divisors, whose sum is σ = 881278494. Its totient is φ = 881278492.

The previous prime is 881278481. The next prime is 881278499. The reversal of 881278493 is 394872188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868304089 + 12974404 = 29467^2 + 3602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-881278493 is a prime.

It is a super-3 number, since 3×881278493³ (a number of 28 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 (881278499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440639246 + 440639247.

It is an arithmetic number, because the mean of its divisors is an integer number (440639247).

Almost surely, 2^881278493 is an apocalyptic number.

It is an amenable number.

881278493 is a deficient number, since it is larger than the sum of its proper divisors (1).

881278493 is an equidigital number, since it uses as much as digits as its factorization.

881278493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 50.

The square root of 881278493 is about 29686.3351224094. The cubic root of 881278493 is about 958.7478223635.

The spelling of 881278493 in words is "eight hundred eighty-one million, two hundred seventy-eight thousand, four hundred ninety-three".