650501538 has 16 divisors (see below), whose sum is σ = 1304631360. Its totient is φ = 216229136.

The previous prime is 650501521. The next prime is 650501539. The reversal of 650501538 is 835105056.

It is a junction number, because it is equal to n+sod(n) for n = 650501499 and 650501508.

It is not an unprimeable number, because it can be changed into a prime (650501539) 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, 148845 + ... + 153152.

It is an arithmetic number, because the mean of its divisors is an integer number (81539460).

Almost surely, 2^650501538 is an apocalyptic number.

650501538 is an abundant number, since it is smaller than the sum of its proper divisors (654129822).

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

650501538 is a wasteful number, since it uses less digits than its factorization.

650501538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302361.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 650501538 is about 25504.9316407631. The cubic root of 650501538 is about 866.4618438720.

The spelling of 650501538 in words is "six hundred fifty million, five hundred one thousand, five hundred thirty-eight".