1345440000 has 180 divisors, whose sum is σ = 4476204656. Its totient is φ = 358656000.

The previous prime is 1345439999. The next prime is 1345440011. The reversal of 1345440000 is 445431.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 478599 + ... + 481401.

Almost surely, 2^1345440000 is an apocalyptic number.

1345440000 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 1345440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2238102328).

1345440000 is an abundant number, since it is smaller than the sum of its proper divisors (3130764656).

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

1345440000 is an frugal number, since it uses more digits than its factorization.

1345440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1345440000 is about 36680.2399119744. The cubic root of 1345440000 is about 1103.9636618999.

Adding to 1345440000 its reverse (445431), we get a palindrome (1345885431).

The spelling of 1345440000 in words is "one billion, three hundred forty-five million, four hundred forty thousand".