981481588 has 12 divisors (see below), whose sum is σ = 1722379680. Its totient is φ = 489373112.

The previous prime is 981481561. The next prime is 981481601. The reversal of 981481588 is 885184189.

It is a super-2 number, since 2×981481588² = 1926612215166003488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340306 + ... + 343177.

It is an arithmetic number, because the mean of its divisors is an integer number (143531640).

Almost surely, 2^981481588 is an apocalyptic number.

It is an amenable number.

981481588 is a deficient number, since it is larger than the sum of its proper divisors (740898092).

981481588 is a wasteful number, since it uses less digits than its factorization.

981481588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683846 (or 683844 counting only the distinct ones).

The product of its digits is 737280, while the sum is 52.

The square root of 981481588 is about 31328.6065441794. The cubic root of 981481588 is about 993.7886955753.

The spelling of 981481588 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred eighty-eight".