1238165 has 4 divisors (see below), whose sum is σ = 1485804. Its totient is φ = 990528.

The previous prime is 1238137. The next prime is 1238177. The reversal of 1238165 is 5618321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 380689 + 857476 = 617^2 + 926^2 .

It is a cyclic number.

It is not a de Polignac number, because 1238165 - 2⁶ = 1238101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123812 + ... + 123821.

It is an arithmetic number, because the mean of its divisors is an integer number (371451).

2^1238165 is an apocalyptic number.

It is an amenable number.

1238165 is a deficient number, since it is larger than the sum of its proper divisors (247639).

1238165 is an equidigital number, since it uses as much as digits as its factorization.

1238165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247638.

The product of its digits is 1440, while the sum is 26.

The square root of 1238165 is about 1112.7286281929. The cubic root of 1238165 is about 107.3806860833.

The spelling of 1238165 in words is "one million, two hundred thirty-eight thousand, one hundred sixty-five".