1538738 has 16 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 717120.

The previous prime is 1538731. The next prime is 1538743. The reversal of 1538738 is 8378351.

It is a junction number, because it is equal to n+sod(n) for n = 1538698 and 1538707.

It is not an unprimeable number, because it can be changed into a prime (1538731) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5543 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

2^1538738 is an apocalyptic number.

1538738 is a deficient number, since it is larger than the sum of its proper divisors (928846).

1538738 is a wasteful number, since it uses less digits than its factorization.

1538738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 20160, while the sum is 35.

The square root of 1538738 is about 1240.4587860949. The cubic root of 1538738 is about 115.4484818622.

The spelling of 1538738 in words is "one million, five hundred thirty-eight thousand, seven hundred thirty-eight".