2149018 has 4 divisors (see below), whose sum is σ = 3223530. Its totient is φ = 1074508.

The previous prime is 2149003. The next prime is 2149031. The reversal of 2149018 is 8109412.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2140369 + 8649 = 1463^2 + 93^2 .

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2148983 and 2149001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537253 + ... + 537256.

2^2149018 is an apocalyptic number.

2149018 is a deficient number, since it is larger than the sum of its proper divisors (1074512).

2149018 is a wasteful number, since it uses less digits than its factorization.

2149018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074511.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2149018 is about 1465.9529323959. The cubic root of 2149018 is about 129.0466349827.

The spelling of 2149018 in words is "two million, one hundred forty-nine thousand, eighteen".