1218136 has 8 divisors (see below), whose sum is σ = 2284020. Its totient is φ = 609064.

The previous prime is 1218131. The next prime is 1218157. The reversal of 1218136 is 6318121.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1218131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76126 + ... + 76141.

2^1218136 is an apocalyptic number.

It is an amenable number.

1218136 is a deficient number, since it is larger than the sum of its proper divisors (1065884).

1218136 is a wasteful number, since it uses less digits than its factorization.

1218136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152273 (or 152269 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 1218136 is about 1103.6919860178. The cubic root of 1218136 is about 106.7985261665.

It can be divided in two parts, 12181 and 36, that multiplied together give a triangular number (438516 = T₉₃₆).

The spelling of 1218136 in words is "one million, two hundred eighteen thousand, one hundred thirty-six".