2481891 has 8 divisors (see below), whose sum is σ = 3416064. Its totient is φ = 1601160.

The previous prime is 2481889. The next prime is 2481901. The reversal of 2481891 is 1981842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2481891 - 2¹ = 2481889 is a prime.

2481891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2481811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13251 + ... + 13436.

It is an arithmetic number, because the mean of its divisors is an integer number (427008).

2^2481891 is an apocalyptic number.

2481891 is a deficient number, since it is larger than the sum of its proper divisors (934173).

2481891 is a wasteful number, since it uses less digits than its factorization.

2481891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26721.

The product of its digits is 4608, while the sum is 33.

The square root of 2481891 is about 1575.4018534964. The cubic root of 2481891 is about 135.3923837905.

The spelling of 2481891 in words is "two million, four hundred eighty-one thousand, eight hundred ninety-one".