1218298 has 4 divisors (see below), whose sum is σ = 1827450. Its totient is φ = 609148.

The previous prime is 1218281. The next prime is 1218307. The reversal of 1218298 is 8928121.

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., 896809 + 321489 = 947^2 + 567^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304573 + ... + 304576.

2^1218298 is an apocalyptic number.

1218298 is a deficient number, since it is larger than the sum of its proper divisors (609152).

1218298 is an equidigital number, since it uses as much as digits as its factorization.

1218298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609151.

The product of its digits is 2304, while the sum is 31.

The square root of 1218298 is about 1103.7653736189. The cubic root of 1218298 is about 106.8032603380.

The spelling of 1218298 in words is "one million, two hundred eighteen thousand, two hundred ninety-eight".