2148493 has 4 divisors (see below), whose sum is σ = 2157948. Its totient is φ = 2139040.

The previous prime is 2148491. The next prime is 2148527. The reversal of 2148493 is 3948412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1261129 + 887364 = 1123^2 + 942^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148493 - 2¹ = 2148491 is a prime.

It is a Duffinian number.

2148493 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148491) 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, 4378 + ... + 4843.

It is an arithmetic number, because the mean of its divisors is an integer number (539487).

2^2148493 is an apocalyptic number.

It is an amenable number.

2148493 is a deficient number, since it is larger than the sum of its proper divisors (9455).

2148493 is an equidigital number, since it uses as much as digits as its factorization.

2148493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454.

The product of its digits is 6912, while the sum is 31.

The square root of 2148493 is about 1465.7738570462. The cubic root of 2148493 is about 129.0361255313.

The spelling of 2148493 in words is "two million, one hundred forty-eight thousand, four hundred ninety-three".