1016562500 has 48 divisors (see below), whose sum is σ = 2224408368. Its totient is φ = 406500000.

The previous prime is 1016562479. The next prime is 1016562563. The reversal of 1016562500 is 52656101.

It can be written as a sum of positive squares in 8 ways, for example, as 997043776 + 19518724 = 31576^2 + 4418^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1016562500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310874 + ... + 314126.

It is an arithmetic number, because the mean of its divisors is an integer number (46341841).

Almost surely, 2^1016562500 is an apocalyptic number.

1016562500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1016562500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1112204184).

1016562500 is an abundant number, since it is smaller than the sum of its proper divisors (1207845868).

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

1016562500 is an frugal number, since it uses more digits than its factorization.

1016562500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292 (or 3260 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1016562500 is about 31883.5772773383. The cubic root of 1016562500 is about 1005.4906311277.

The spelling of 1016562500 in words is "one billion, sixteen million, five hundred sixty-two thousand, five hundred".