2049813 has 24 divisors (see below), whose sum is σ = 3177600. Its totient is φ = 1305720.

The previous prime is 2049797. The next prime is 2049821. The reversal of 2049813 is 3189402.

It is not a de Polignac number, because 2049813 - 2⁴ = 2049797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2049823) 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, 25908 + ... + 25986.

It is an arithmetic number, because the mean of its divisors is an integer number (132400).

2^2049813 is an apocalyptic number.

It is an amenable number.

2049813 is a deficient number, since it is larger than the sum of its proper divisors (1127787).

2049813 is an equidigital number, since it uses as much as digits as its factorization.

2049813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2049813 is about 1431.7168016057. The cubic root of 2049813 is about 127.0295465179.

The spelling of 2049813 in words is "two million, forty-nine thousand, eight hundred thirteen".