2491938 has 16 divisors (see below), whose sum is σ = 5537760. Its totient is φ = 830628.

The previous prime is 2491933. The next prime is 2491949. The reversal of 2491938 is 8391942.

It is a super-3 number, since 3×2491938³ = 46422973334500517016, which contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2491933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23020 + ... + 23127.

It is an arithmetic number, because the mean of its divisors is an integer number (346110).

2^2491938 is an apocalyptic number.

2491938 is an abundant number, since it is smaller than the sum of its proper divisors (3045822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2491938 is a wasteful number, since it uses less digits than its factorization.

2491938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46158 (or 46152 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2491938 is about 1578.5873431648. The cubic root of 2491938 is about 135.5748328264.

It can be divided in two parts, 249 and 1938, that added together give a 7-th power (2187 = 3⁷).

The spelling of 2491938 in words is "two million, four hundred ninety-one thousand, nine hundred thirty-eight".