2443868157538 has 8 divisors (see below), whose sum is σ = 3665813854032. Its totient is φ = 1221930206196.

The previous prime is 2443868157529. The next prime is 2443868157539. The reversal of 2443868157538 is 8357518683442.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2443868157538.

It is not an unprimeable number, because it can be changed into a prime (2443868157539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069920 + ... + 2456107.

It is an arithmetic number, because the mean of its divisors is an integer number (458226731754).

Almost surely, 2^{2443868157538} is an apocalyptic number.

2443868157538 is a deficient number, since it is larger than the sum of its proper divisors (1221945696494).

2443868157538 is a wasteful number, since it uses less digits than its factorization.

2443868157538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872576.

The product of its digits is 154828800, while the sum is 64.

The spelling of 2443868157538 in words is "two trillion, four hundred forty-three billion, eight hundred sixty-eight million, one hundred fifty-seven thousand, five hundred thirty-eight".