2113887542 has 64 divisors (see below), whose sum is σ = 3791733120. Its totient is φ = 873928704.

The previous prime is 2113887539. The next prime is 2113887547. The reversal of 2113887542 is 2457883112.

It is a self number, because there is not a number n which added to its sum of digits gives 2113887542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113887547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2734268 + ... + 2735040.

It is an arithmetic number, because the mean of its divisors is an integer number (59245830).

Almost surely, 2^2113887542 is an apocalyptic number.

2113887542 is a deficient number, since it is larger than the sum of its proper divisors (1677845578).

2113887542 is a wasteful number, since it uses less digits than its factorization.

2113887542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097.

The product of its digits is 107520, while the sum is 41.

The square root of 2113887542 is about 45977.0327663715. The cubic root of 2113887542 is about 1283.3958376184.

The spelling of 2113887542 in words is "two billion, one hundred thirteen million, eight hundred eighty-seven thousand, five hundred forty-two".