1545420000 has 240 divisors, whose sum is σ = 5195836800. Its totient is φ = 401856000.

The previous prime is 1545419999. The next prime is 1545420007. The reversal of 1545420000 is 245451.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545420007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2579701 + ... + 2580299.

It is an arithmetic number, because the mean of its divisors is an integer number (21649320).

Almost surely, 2^1545420000 is an apocalyptic number.

1545420000 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 1545420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2597918400).

1545420000 is an abundant number, since it is smaller than the sum of its proper divisors (3650416800).

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

1545420000 is an equidigital number, since it uses as much as digits as its factorization.

1545420000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 1545420000 is about 39311.8302804639. The cubic root of 1545420000 is about 1156.1535298135.

Adding to 1545420000 its reverse (245451), we get a palindrome (1545665451).

The spelling of 1545420000 in words is "one billion, five hundred forty-five million, four hundred twenty thousand".