981481582 has 8 divisors (see below), whose sum is σ = 1496357352. Its totient is φ = 482695800.

The previous prime is 981481561. The next prime is 981481601. The reversal of 981481582 is 285184189.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022344 + ... + 4022587.

It is an arithmetic number, because the mean of its divisors is an integer number (187044669).

Almost surely, 2^981481582 is an apocalyptic number.

981481582 is a deficient number, since it is larger than the sum of its proper divisors (514875770).

981481582 is a wasteful number, since it uses less digits than its factorization.

981481582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8044994.

The product of its digits is 184320, while the sum is 46.

The square root of 981481582 is about 31328.6064484203. The cubic root of 981481582 is about 993.7886935503.

The spelling of 981481582 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred eighty-two".