981937068 has 144 divisors (see below), whose sum is σ = 2945424384. Its totient is φ = 252510720.

The previous prime is 981937039. The next prime is 981937109. The reversal of 981937068 is 860739189.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 981937068.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227773 + ... + 232043.

It is an arithmetic number, because the mean of its divisors is an integer number (20454336).

Almost surely, 2^981937068 is an apocalyptic number.

981937068 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981937068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472712192).

981937068 is an abundant number, since it is smaller than the sum of its proper divisors (1963487316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981937068 is a wasteful number, since it uses less digits than its factorization.

981937068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332 (or 4323 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 981937068 is about 31335.8750954876. The cubic root of 981937068 is about 993.9424022699.

The spelling of 981937068 in words is "nine hundred eighty-one million, nine hundred thirty-seven thousand, sixty-eight".