2145430452 has 96 divisors (see below), whose sum is σ = 5689958400. Its totient is φ = 623430400.

The previous prime is 2145430439. The next prime is 2145430477. The reversal of 2145430452 is 2540345412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315949 + ... + 322667.

It is an arithmetic number, because the mean of its divisors is an integer number (59270400).

Almost surely, 2^2145430452 is an apocalyptic number.

2145430452 is a gapful number since it is divisible by the number (22) 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 2145430452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2844979200).

2145430452 is an abundant number, since it is smaller than the sum of its proper divisors (3544527948).

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

2145430452 is a wasteful number, since it uses less digits than its factorization.

2145430452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837 (or 6835 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 2145430452 is about 46318.7915645475. The cubic root of 2145430452 is about 1289.7478528872.

Adding to 2145430452 its reverse (2540345412), we get a palindrome (4685775864).

The spelling of 2145430452 in words is "two billion, one hundred forty-five million, four hundred thirty thousand, four hundred fifty-two".