1020500263 has 8 divisors (see below), whose sum is σ = 1036316736. Its totient is φ = 1004796000.

The previous prime is 1020500251. The next prime is 1020500321. The reversal of 1020500263 is 3620050201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020500263 - 2⁹ = 1020499751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020500263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020500233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9631 + ... + 46192.

It is an arithmetic number, because the mean of its divisors is an integer number (129539592).

Almost surely, 2^1020500263 is an apocalyptic number.

1020500263 is a deficient number, since it is larger than the sum of its proper divisors (15816473).

1020500263 is a wasteful number, since it uses less digits than its factorization.

1020500263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56105.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1020500263 is about 31945.2698063422. The cubic root of 1020500263 is about 1006.7872500150.

Adding to 1020500263 its reverse (3620050201), we get a palindrome (4640550464).

The spelling of 1020500263 in words is "one billion, twenty million, five hundred thousand, two hundred sixty-three".