2113859854394 has 4 divisors (see below), whose sum is σ = 3170789781594. Its totient is φ = 1056929927196.

The previous prime is 2113859854387. The next prime is 2113859854417. The reversal of 2113859854394 is 4934589583112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2022900310369 + 90959544025 = 1422287^2 + 301595^2 .

It is a super-2 number, since 2×2113859854394² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528464963597 + ... + 528464963600.

Almost surely, 2^{2113859854394} is an apocalyptic number.

2113859854394 is a deficient number, since it is larger than the sum of its proper divisors (1056929927200).

2113859854394 is a wasteful number, since it uses less digits than its factorization.

2113859854394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056929927199.

The product of its digits is 37324800, while the sum is 62.

The spelling of 2113859854394 in words is "two trillion, one hundred thirteen billion, eight hundred fifty-nine million, eight hundred fifty-four thousand, three hundred ninety-four".