1981060 has 12 divisors (see below), whose sum is σ = 4160268. Its totient is φ = 792416.

The previous prime is 1981037. The next prime is 1981081. The reversal of 1981060 is 601891.

It can be written as a sum of positive squares in 2 ways, for example, as 222784 + 1758276 = 472^2 + 1326^2 .

It is a plaindrome in base 11.

It is a zygodrome in base 11.

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, 49507 + ... + 49546.

It is an arithmetic number, because the mean of its divisors is an integer number (346689).

2^1981060 is an apocalyptic number.

1981060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1981060 is an abundant number, since it is smaller than the sum of its proper divisors (2179208).

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

1981060 is a wasteful number, since it uses less digits than its factorization.

1981060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99062 (or 99060 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1981060 is about 1407.5013321486. The cubic root of 1981060 is about 125.5931278104.

The spelling of 1981060 in words is "one million, nine hundred eighty-one thousand, sixty".