2145431448 has 48 divisors (see below), whose sum is σ = 6025754280. Its totient is φ = 715143168.

The previous prime is 2145431443. The next prime is 2145431461. The reversal of 2145431448 is 8441345412.

2145431448 is a `hidden beast` number, since 214 + 5 + 431 + 4 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145431443) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 549865 + ... + 553752.

Almost surely, 2^2145431448 is an apocalyptic number.

It is an amenable number.

2145431448 is an abundant number, since it is smaller than the sum of its proper divisors (3880322832).

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

2145431448 is a wasteful number, since it uses less digits than its factorization.

2145431448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103638 (or 1103622 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 2145431448 is about 46318.8023161221. The cubic root of 2145431448 is about 1289.7480524724.

The spelling of 2145431448 in words is "two billion, one hundred forty-five million, four hundred thirty-one thousand, four hundred forty-eight".