1218150 has 36 divisors (see below), whose sum is σ = 3273972. Its totient is φ = 324720.

The previous prime is 1218131. The next prime is 1218157. The reversal of 1218150 is 518121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218157) 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, 904 + ... + 1803.

2^1218150 is an apocalyptic number.

1218150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1218150 is an abundant number, since it is smaller than the sum of its proper divisors (2055822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218150 is a wasteful number, since it uses less digits than its factorization.

1218150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2717 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1218150 is about 1103.6983283488. The cubic root of 1218150 is about 106.7989353090.

The spelling of 1218150 in words is "one million, two hundred eighteen thousand, one hundred fifty".