1188265 has 16 divisors (see below), whose sum is σ = 1559376. Its totient is φ = 864000.

The previous prime is 1188263. The next prime is 1188269. The reversal of 1188265 is 5628811.

It can be written as a sum of positive squares in 8 ways, for example, as 112896 + 1075369 = 336^2 + 1037^2 .

It is not a de Polignac number, because 1188265 - 2¹ = 1188263 is a prime.

It is a super-3 number, since 3×1188265³ = 5033396822341528875, which contains 333 as substring.

1188265 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6475 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (97461).

2^1188265 is an apocalyptic number.

It is an amenable number.

1188265 is a deficient number, since it is larger than the sum of its proper divisors (371111).

1188265 is a wasteful number, since it uses less digits than its factorization.

1188265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300.

The product of its digits is 3840, while the sum is 31.

The square root of 1188265 is about 1090.0756854457. The cubic root of 1188265 is about 105.9183244096.

The spelling of 1188265 in words is "one million, one hundred eighty-eight thousand, two hundred sixty-five".