981278127 has 12 divisors (see below), whose sum is σ = 1417749840. Its totient is φ = 654024768.

The previous prime is 981278087. The next prime is 981278143. The reversal of 981278127 is 721872189.

It is not a de Polignac number, because 981278127 - 2¹⁸ = 981015983 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981274127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34198 + ... + 55964.

It is an arithmetic number, because the mean of its divisors is an integer number (118145820).

Almost surely, 2^981278127 is an apocalyptic number.

981278127 is a deficient number, since it is larger than the sum of its proper divisors (436471713).

981278127 is a wasteful number, since it uses less digits than its factorization.

981278127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26782 (or 26779 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 981278127 is about 31325.3591679329. The cubic root of 981278127 is about 993.7200200757.

The spelling of 981278127 in words is "nine hundred eighty-one million, two hundred seventy-eight thousand, one hundred twenty-seven".