2081385 has 24 divisors (see below), whose sum is σ = 3766464. Its totient is φ = 1061280.

The previous prime is 2081383. The next prime is 2081407. The reversal of 2081385 is 5831802.

It is a happy number.

It is not a de Polignac number, because 2081385 - 2¹ = 2081383 is a prime.

2081385 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2081383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30 + ... + 2040.

It is an arithmetic number, because the mean of its divisors is an integer number (156936).

2^2081385 is an apocalyptic number.

It is an amenable number.

2081385 is a deficient number, since it is larger than the sum of its proper divisors (1685079).

2081385 is a wasteful number, since it uses less digits than its factorization.

2081385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045 (or 2042 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2081385 is about 1442.7005926387. The cubic root of 2081385 is about 127.6784122822.

The spelling of 2081385 in words is "two million, eighty-one thousand, three hundred eighty-five".