2493641 has 4 divisors (see below), whose sum is σ = 2496900. Its totient is φ = 2490384.

The previous prime is 2493629. The next prime is 2493643. The reversal of 2493641 is 1463942.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2468041 + 25600 = 1571^2 + 160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2493641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2493643) 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, 215 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (624225).

2^2493641 is an apocalyptic number.

It is an amenable number.

2493641 is a deficient number, since it is larger than the sum of its proper divisors (3259).

2493641 is a wasteful number, since it uses less digits than its factorization.

2493641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258.

The product of its digits is 5184, while the sum is 29.

The square root of 2493641 is about 1579.1266573648. The cubic root of 2493641 is about 135.6057099141.

It can be divided in two parts, 249 and 3641, that multiplied together give a palindrome (906609).

The spelling of 2493641 in words is "two million, four hundred ninety-three thousand, six hundred forty-one".