1188407 has 4 divisors (see below), whose sum is σ = 1296456. Its totient is φ = 1080360.

The previous prime is 1188389. The next prime is 1188409. The reversal of 1188407 is 7048811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1188407 - 2⁸ = 1188151 is a prime.

It is a super-2 number, since 2×1188407² = 2824622395298, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1188407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54008 + ... + 54029.

It is an arithmetic number, because the mean of its divisors is an integer number (324114).

2^1188407 is an apocalyptic number.

1188407 is a deficient number, since it is larger than the sum of its proper divisors (108049).

1188407 is a wasteful number, since it uses less digits than its factorization.

1188407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108048.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 1188407 is about 1090.1408165921. The cubic root of 1188407 is about 105.9225433907.

The spelling of 1188407 in words is "one million, one hundred eighty-eight thousand, four hundred seven".