1197018 has 28 divisors (see below), whose sum is σ = 2695338. Its totient is φ = 398520.

The previous prime is 1197017. The next prime is 1197029. The reversal of 1197018 is 8107911.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 88209 = 1053^2 + 297^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1196982 and 1197000.

It is not an unprimeable number, because it can be changed into a prime (1197011) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1048 + ... + 1868.

2^1197018 is an apocalyptic number.

1197018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1197018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347669).

1197018 is an abundant number, since it is smaller than the sum of its proper divisors (1498320).

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

1197018 is an frugal number, since it uses more digits than its factorization.

1197018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 1197018 is about 1094.0831778252. The cubic root of 1197018 is about 106.1777603531.

The spelling of 1197018 in words is "one million, one hundred ninety-seven thousand, eighteen".