2149863 has 4 divisors (see below), whose sum is σ = 2866488. Its totient is φ = 1433240.

The previous prime is 2149859. The next prime is 2149867. The reversal of 2149863 is 3689412.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2149859) and next prime (2149867).

It is a cyclic number.

It is not a de Polignac number, because 2149863 - 2² = 2149859 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149867) 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, 358308 + ... + 358313.

It is an arithmetic number, because the mean of its divisors is an integer number (716622).

2^2149863 is an apocalyptic number.

2149863 is a deficient number, since it is larger than the sum of its proper divisors (716625).

2149863 is an equidigital number, since it uses as much as digits as its factorization.

2149863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716624.

The product of its digits is 10368, while the sum is 33.

The square root of 2149863 is about 1466.2411125050. The cubic root of 2149863 is about 129.0635466012.

The spelling of 2149863 in words is "two million, one hundred forty-nine thousand, eight hundred sixty-three".