2418991 has 4 divisors (see below), whose sum is σ = 2440512. Its totient is φ = 2397472.

The previous prime is 2418967. The next prime is 2419007. The reversal of 2418991 is 1998142.

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

It is a cyclic number.

It is not a de Polignac number, because 2418991 - 2⁷ = 2418863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2418791) 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, 10591 + ... + 10816.

It is an arithmetic number, because the mean of its divisors is an integer number (610128).

2^2418991 is an apocalyptic number.

2418991 is a deficient number, since it is larger than the sum of its proper divisors (21521).

2418991 is a wasteful number, since it uses less digits than its factorization.

2418991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21520.

The product of its digits is 5184, while the sum is 34.

The square root of 2418991 is about 1555.3105799164. The cubic root of 2418991 is about 134.2388070987.

The spelling of 2418991 in words is "two million, four hundred eighteen thousand, nine hundred ninety-one".