1003656522 has 64 divisors (see below), whose sum is σ = 2230081920. Its totient is φ = 301086720.

The previous prime is 1003656509. The next prime is 1003656529. The reversal of 1003656522 is 2256563001.

It is a self number, because there is not a number n which added to its sum of digits gives 1003656522.

It is not an unprimeable number, because it can be changed into a prime (1003656529) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 869898 + ... + 871050.

It is an arithmetic number, because the mean of its divisors is an integer number (34845030).

Almost surely, 2^1003656522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1003656522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1115040960).

1003656522 is an abundant number, since it is smaller than the sum of its proper divisors (1226425398).

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

1003656522 is a wasteful number, since it uses less digits than its factorization.

1003656522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1003656522 is about 31680.5385370893. The cubic root of 1003656522 is about 1001.2173581046.

The spelling of 1003656522 in words is "one billion, three million, six hundred fifty-six thousand, five hundred twenty-two".