981375284 has 6 divisors (see below), whose sum is σ = 1717406754. Its totient is φ = 490687640.

The previous prime is 981375271. The next prime is 981375299. The reversal of 981375284 is 482573189.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 520843684 + 460531600 = 22822^2 + 21460^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122671907 + ... + 122671914.

It is an arithmetic number, because the mean of its divisors is an integer number (286234459).

Almost surely, 2^981375284 is an apocalyptic number.

It is an amenable number.

981375284 is a deficient number, since it is larger than the sum of its proper divisors (736031470).

981375284 is a wasteful number, since it uses less digits than its factorization.

981375284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245343825 (or 245343823 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 981375284 is about 31326.9099018719. The cubic root of 981375284 is about 993.7528152868.

The spelling of 981375284 in words is "nine hundred eighty-one million, three hundred seventy-five thousand, two hundred eighty-four".