1296450000 has 360 divisors, whose sum is σ = 4709761056. Its totient is φ = 332640000.

The previous prime is 1296449983. The next prime is 1296450007. The reversal of 1296450000 is 546921.

1296450000 is a `hidden beast` number, since 12 + 9 + 645 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-3 number, since 3×1296450000³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296450007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19349967 + ... + 19350033.

Almost surely, 2^1296450000 is an apocalyptic number.

1296450000 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 1296450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354880528).

1296450000 is an abundant number, since it is smaller than the sum of its proper divisors (3413311056).

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

1296450000 is an equidigital number, since it uses as much as digits as its factorization.

1296450000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1296450000 is about 36006.2494575594. The cubic root of 1296450000 is about 1090.3985300270.

Adding to 1296450000 its reverse (546921), we get a palindrome (1296996921).

The spelling of 1296450000 in words is "one billion, two hundred ninety-six million, four hundred fifty thousand".