1501500138 has 32 divisors (see below), whose sum is σ = 3044587392. Its totient is φ = 493608000.

The previous prime is 1501500109. The next prime is 1501500139. The reversal of 1501500138 is 8310051051.

It is not an unprimeable number, because it can be changed into a prime (1501500139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154668 + ... + 164088.

It is an arithmetic number, because the mean of its divisors is an integer number (95143356).

Almost surely, 2^1501500138 is an apocalyptic number.

1501500138 is an abundant number, since it is smaller than the sum of its proper divisors (1543087254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1501500138 is a wasteful number, since it uses less digits than its factorization.

1501500138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9790.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 1501500138 is about 38749.1953206773. The cubic root of 1501500138 is about 1145.0957219288.

Adding to 1501500138 its reverse (8310051051), we get a palindrome (9811551189).

The spelling of 1501500138 in words is "one billion, five hundred one million, five hundred thousand, one hundred thirty-eight".