2389784074871 has 4 divisors (see below), whose sum is σ = 2389790555544. Its totient is φ = 2389777594200.

The previous prime is 2389784074849. The next prime is 2389784074879. The reversal of 2389784074871 is 1784704879832.

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

It is a cyclic number.

It is not a de Polignac number, because 2389784074871 - 2²² = 2389779880567 is a prime.

It is a super-2 number, since 2×2389784074871² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389784074879) 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, 2651540 + ... + 3436601.

It is an arithmetic number, because the mean of its divisors is an integer number (597447638886).

Almost surely, 2^{2389784074871} is an apocalyptic number.

2389784074871 is a deficient number, since it is larger than the sum of its proper divisors (6480673).

2389784074871 is an equidigital number, since it uses as much as digits as its factorization.

2389784074871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480672.

The product of its (nonzero) digits is 151732224, while the sum is 68.

The spelling of 2389784074871 in words is "two trillion, three hundred eighty-nine billion, seven hundred eighty-four million, seventy-four thousand, eight hundred seventy-one".