2493643 has 2 divisors, whose sum is σ = 2493644. Its totient is φ = 2493642.

The previous prime is 2493629. The next prime is 2493653. The reversal of 2493643 is 3463942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2493643 - 2¹⁷ = 2362571 is a prime.

It is a super-2 number, since 2×2493643² = 12436510822898, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁹ + 4 + 9⁶ + 3⁵ + 6⁸ + 4⁹ + 3⁹ .

It is not a weakly prime, because it can be changed into another prime (2493653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1246821 + 1246822.

It is an arithmetic number, because the mean of its divisors is an integer number (1246822).

2^2493643 is an apocalyptic number.

2493643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2493643 is an equidigital number, since it uses as much as digits as its factorization.

2493643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 31.

The square root of 2493643 is about 1579.1272906261. The cubic root of 2493643 is about 135.6057461678.

Subtracting 2493643 from its reverse (3463942), we obtain a cube (970299 = 99³).

It can be divided in two parts, 2493 and 643, that added together give a square (3136 = 56²).

The spelling of 2493643 in words is "two million, four hundred ninety-three thousand, six hundred forty-three".