1013455503 has 16 divisors (see below), whose sum is σ = 1549849600. Its totient is φ = 653841720.

The previous prime is 1013455447. The next prime is 1013455511. The reversal of 1013455503 is 3055543101.

1013455503 is a `hidden beast` number, since 101 + 3 + 4 + 5 + 550 + 3 = 666.

1013455503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1013455503 - 2⁹ = 1013454991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013455543) 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, 604573 + ... + 606246.

It is an arithmetic number, because the mean of its divisors is an integer number (96865600).

Almost surely, 2^1013455503 is an apocalyptic number.

1013455503 is a deficient number, since it is larger than the sum of its proper divisors (536394097).

1013455503 is a wasteful number, since it uses less digits than its factorization.

1013455503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210859 (or 1210853 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1013455503 is about 31834.8158939234. The cubic root of 1013455503 is about 1004.4651999801.

Adding to 1013455503 its reverse (3055543101), we get a palindrome (4068998604).

The spelling of 1013455503 in words is "one billion, thirteen million, four hundred fifty-five thousand, five hundred three".