501345138 has 16 divisors (see below), whose sum is σ = 1145931840. Its totient is φ = 143241456.

The previous prime is 501345137. The next prime is 501345151. The reversal of 501345138 is 831543105.

It is not an unprimeable number, because it can be changed into a prime (501345133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5968353 + ... + 5968436.

It is an arithmetic number, because the mean of its divisors is an integer number (71620740).

Almost surely, 2^501345138 is an apocalyptic number.

501345138 is an abundant number, since it is smaller than the sum of its proper divisors (644586702).

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

501345138 is a wasteful number, since it uses less digits than its factorization.

501345138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11936801.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 501345138 is about 22390.7377725702. The cubic root of 501345138 is about 794.4116464868.

The spelling of 501345138 in words is "five hundred one million, three hundred forty-five thousand, one hundred thirty-eight".