2918493 has 18 divisors (see below), whose sum is σ = 4414046. Its totient is φ = 1858032.

The previous prime is 2918491. The next prime is 2918501. The reversal of 2918493 is 3948192.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 1375929 = 1242^2 + 1173^2 .

It is not a de Polignac number, because 2918493 - 2¹ = 2918491 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 (2918491) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4455 + ... + 5067.

2^2918493 is an apocalyptic number.

2918493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2918493 is a deficient number, since it is larger than the sum of its proper divisors (1495553).

2918493 is a wasteful number, since it uses less digits than its factorization.

2918493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665 (or 639 counting only the distinct ones).

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

The square root of 2918493 is about 1708.3597396333. The cubic root of 2918493 is about 142.9067969774.

The spelling of 2918493 in words is "two million, nine hundred eighteen thousand, four hundred ninety-three".