1015138 has 16 divisors (see below), whose sum is σ = 1638360. Its totient is φ = 470016.

The previous prime is 1015127. The next prime is 1015139. The reversal of 1015138 is 8315101.

It can be written as a sum of positive squares in 4 ways, for example, as 1014049 + 1089 = 1007^2 + 33^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015139) 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, 2278 + ... + 2686.

2^1015138 is an apocalyptic number.

1015138 is a deficient number, since it is larger than the sum of its proper divisors (623222).

1015138 is a wasteful number, since it uses less digits than its factorization.

1015138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1015138 is about 1007.5405699028. The cubic root of 1015138 is about 100.5020749883.

The spelling of 1015138 in words is "one million, fifteen thousand, one hundred thirty-eight".