1138965 has 8 divisors (see below), whose sum is σ = 1822368. Its totient is φ = 607440.

The previous prime is 1138961. The next prime is 1138967. The reversal of 1138965 is 5698311.

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

It is not a de Polignac number, because 1138965 - 2² = 1138961 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138961) 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, 37951 + ... + 37980.

It is an arithmetic number, because the mean of its divisors is an integer number (227796).

2^1138965 is an apocalyptic number.

1138965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1138965 is a deficient number, since it is larger than the sum of its proper divisors (683403).

1138965 is an equidigital number, since it uses as much as digits as its factorization.

1138965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75939.

The product of its digits is 6480, while the sum is 33.

The square root of 1138965 is about 1067.2230319853. The cubic root of 1138965 is about 104.4327688858.

The spelling of 1138965 in words is "one million, one hundred thirty-eight thousand, nine hundred sixty-five".