1318154 has 4 divisors (see below), whose sum is σ = 1977234. Its totient is φ = 659076.

The previous prime is 1318147. The next prime is 1318157. The reversal of 1318154 is 4518131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4518131 = 1993 ⋅2267.

It can be written as a sum of positive squares in only one way, i.e., 1288225 + 29929 = 1135^2 + 173^2 .

It is not an unprimeable number, because it can be changed into a prime (1318157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329537 + ... + 329540.

2^1318154 is an apocalyptic number.

1318154 is a deficient number, since it is larger than the sum of its proper divisors (659080).

1318154 is an equidigital number, since it uses as much as digits as its factorization.

1318154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659079.

The product of its digits is 480, while the sum is 23.

The square root of 1318154 is about 1148.1088798542. The cubic root of 1318154 is about 109.6449710667.

Subtracting from 1318154 its sum of digits (23), we obtain a palindrome (1318131).

The spelling of 1318154 in words is "one million, three hundred eighteen thousand, one hundred fifty-four".