1013503500 has 72 divisors (see below), whose sum is σ = 3197279904. Its totient is φ = 270266400.

The previous prime is 1013503493. The next prime is 1013503541. The reversal of 1013503500 is 53053101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108112 + ... + 117111.

Almost surely, 2^1013503500 is an apocalyptic number.

1013503500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013503500 is an abundant number, since it is smaller than the sum of its proper divisors (2183776404).

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

1013503500 is a wasteful number, since it uses less digits than its factorization.

1013503500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225248 (or 225233 counting only the distinct ones).

The product of its (nonzero) digits is 225, while the sum is 18.

The square root of 1013503500 is about 31835.5697294708. The cubic root of 1013503500 is about 1004.4810568036.

Adding to 1013503500 its reverse (53053101), we get a palindrome (1066556601).

The spelling of 1013503500 in words is "one billion, thirteen million, five hundred three thousand, five hundred".