2145871484 has 12 divisors (see below), whose sum is σ = 3842607384. Its totient is φ = 1047983664.

The previous prime is 2145871463. The next prime is 2145871493. The reversal of 2145871484 is 4841785412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6237827 + ... + 6238170.

It is an arithmetic number, because the mean of its divisors is an integer number (320217282).

Almost surely, 2^2145871484 is an apocalyptic number.

It is an amenable number.

2145871484 is a deficient number, since it is larger than the sum of its proper divisors (1696735900).

2145871484 is a wasteful number, since it uses less digits than its factorization.

2145871484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12476044 (or 12476042 counting only the distinct ones).

The product of its digits is 286720, while the sum is 44.

The square root of 2145871484 is about 46323.5521522260. The cubic root of 2145871484 is about 1289.8362238248.

The spelling of 2145871484 in words is "two billion, one hundred forty-five million, eight hundred seventy-one thousand, four hundred eighty-four".