4189518540 has 72 divisors (see below), whose sum is σ = 13260750048. Its totient is φ = 1068629760.

The previous prime is 4189518533. The next prime is 4189518581. The reversal of 4189518540 is 458159814.

It is a happy number.

4189518540 is a `hidden beast` number, since 4 + 1 + 8 + 95 + 18 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501841 + ... + 510120.

It is an arithmetic number, because the mean of its divisors is an integer number (184177084).

Almost surely, 2^4189518540 is an apocalyptic number.

It is an amenable number.

4189518540 is an abundant number, since it is smaller than the sum of its proper divisors (9071231508).

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

4189518540 is a wasteful number, since it uses less digits than its factorization.

4189518540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011999 (or 1011994 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 4189518540 is about 64726.4902493562. The cubic root of 4189518540 is about 1612.0853781640.

It can be divided in two parts, 4189 and 518540, that added together give a square (522729 = 723²).

The spelling of 4189518540 in words is "four billion, one hundred eighty-nine million, five hundred eighteen thousand, five hundred forty".