1681092 has 54 divisors (see below), whose sum is σ = 4948398. Its totient is φ = 479808.

The previous prime is 1681091. The next prime is 1681103. The reversal of 1681092 is 2901861.

It can be written as a sum of positive squares in only one way, i.e., 1382976 + 298116 = 1176^2 + 546^2 .

It is not an unprimeable number, because it can be changed into a prime (1681091) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1288 + ... + 2240.

It is an arithmetic number, because the mean of its divisors is an integer number (91637).

2^1681092 is an apocalyptic number.

1681092 is a gapful number since it is divisible by the number (12) 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 1681092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2474199).

1681092 is an abundant number, since it is smaller than the sum of its proper divisors (3267306).

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

1681092 is a wasteful number, since it uses less digits than its factorization.

1681092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1681092 is about 1296.5693193964. The cubic root of 1681092 is about 118.9041904717.

The spelling of 1681092 in words is "one million, six hundred eighty-one thousand, ninety-two".