1538135 has 4 divisors (see below), whose sum is σ = 1845768. Its totient is φ = 1230504.

The previous prime is 1538111. The next prime is 1538167. The reversal of 1538135 is 5318351.

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 1538135 - 2¹⁶ = 1472599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153809 + ... + 153818.

It is an arithmetic number, because the mean of its divisors is an integer number (461442).

2^1538135 is an apocalyptic number.

1538135 is a deficient number, since it is larger than the sum of its proper divisors (307633).

1538135 is an equidigital number, since it uses as much as digits as its factorization.

1538135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307632.

The product of its digits is 1800, while the sum is 26.

The square root of 1538135 is about 1240.2157070445. The cubic root of 1538135 is about 115.4333992576.

The spelling of 1538135 in words is "one million, five hundred thirty-eight thousand, one hundred thirty-five".