981258129 has 12 divisors (see below), whose sum is σ = 1427571600. Its totient is φ = 649464984.

The previous prime is 981258077. The next prime is 981258133. The reversal of 981258129 is 921852189.

It is not a de Polignac number, because 981258129 - 2⁷ = 981258001 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (981258149) 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, 390939 + ... + 393440.

It is an arithmetic number, because the mean of its divisors is an integer number (118964300).

Almost surely, 2^981258129 is an apocalyptic number.

It is an amenable number.

981258129 is a deficient number, since it is larger than the sum of its proper divisors (446313471).

981258129 is a wasteful number, since it uses less digits than its factorization.

981258129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784524 (or 784521 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 981258129 is about 31325.0399680511. The cubic root of 981258129 is about 993.7132695099.

The spelling of 981258129 in words is "nine hundred eighty-one million, two hundred fifty-eight thousand, one hundred twenty-nine".