2081629 has 4 divisors (see below), whose sum is σ = 2270880. Its totient is φ = 1892380.

The previous prime is 2081627. The next prime is 2081647. The reversal of 2081629 is 9261802.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2081629 - 2¹ = 2081627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2081597 and 2081606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94609 + ... + 94630.

It is an arithmetic number, because the mean of its divisors is an integer number (567720).

2^2081629 is an apocalyptic number.

It is an amenable number.

2081629 is a deficient number, since it is larger than the sum of its proper divisors (189251).

2081629 is a wasteful number, since it uses less digits than its factorization.

2081629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189250.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2081629 is about 1442.7851537911. The cubic root of 2081629 is about 127.6834013184.

The spelling of 2081629 in words is "two million, eighty-one thousand, six hundred twenty-nine".