1260500000 has 84 divisors (see below), whose sum is σ = 3103202466. Its totient is φ = 504000000.

The previous prime is 1260499997. The next prime is 1260500009. The reversal of 1260500000 is 50621.

It can be written as a sum of positive squares in 7 ways, for example, as 1092434704 + 168065296 = 33052^2 + 12964^2 .

It is not an unprimeable number, because it can be changed into a prime (1260500009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 498740 + ... + 501260.

Almost surely, 2^1260500000 is an apocalyptic number.

1260500000 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 1260500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1551601233).

1260500000 is an abundant number, since it is smaller than the sum of its proper divisors (1842702466).

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

1260500000 is an frugal number, since it uses more digits than its factorization.

1260500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 1260500000 is about 35503.5209521535. The cubic root of 1260500000 is about 1080.2251473904.

Adding to 1260500000 its reverse (50621), we get a palindrome (1260550621).

The spelling of 1260500000 in words is "one billion, two hundred sixty million, five hundred thousand".