2113830987 has 16 divisors (see below), whose sum is σ = 2877211680. Its totient is φ = 1380038400.

The previous prime is 2113830977. The next prime is 2113830991. The reversal of 2113830987 is 7890383112.

It is not a de Polignac number, because 2113830987 - 2¹⁴ = 2113814603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2113830907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16687 + ... + 67127.

It is an arithmetic number, because the mean of its divisors is an integer number (179825730).

Almost surely, 2^2113830987 is an apocalyptic number.

2113830987 is a deficient number, since it is larger than the sum of its proper divisors (763380693).

2113830987 is a wasteful number, since it uses less digits than its factorization.

2113830987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50734.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2113830987 is about 45976.4177269174. The cubic root of 2113830987 is about 1283.3843921815.

It can be divided in two parts, 21138 and 30987, that added together give a palindrome (52125).

The spelling of 2113830987 in words is "two billion, one hundred thirteen million, eight hundred thirty thousand, nine hundred eighty-seven".