1118381 has 8 divisors (see below), whose sum is σ = 1227744. Its totient is φ = 1010320.

The previous prime is 1118371. The next prime is 1118393. The reversal of 1118381 is 1838111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1118381 - 2⁶ = 1118317 is a prime.

It is a super-2 number, since 2×1118381² = 2501552122322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (153468).

2^1118381 is an apocalyptic number.

1118381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1118381 is a deficient number, since it is larger than the sum of its proper divisors (109363).

1118381 is a wasteful number, since it uses less digits than its factorization.

1118381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651.

The product of its digits is 192, while the sum is 23.

The square root of 1118381 is about 1057.5353421990. The cubic root of 1118381 is about 103.7998183352.

The spelling of 1118381 in words is "one million, one hundred eighteen thousand, three hundred eighty-one".