2180239741 has 4 divisors (see below), whose sum is σ = 2199534012. Its totient is φ = 2160945472.

The previous prime is 2180239693. The next prime is 2180239753. The reversal of 2180239741 is 1479320812.

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

It can be written as a sum of positive squares in 2 ways, for example, as 584237241 + 1596002500 = 24171^2 + 39950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180239741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180239741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180239771) 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, 9646966 + ... + 9647191.

It is an arithmetic number, because the mean of its divisors is an integer number (549883503).

Almost surely, 2^2180239741 is an apocalyptic number.

It is an amenable number.

2180239741 is a deficient number, since it is larger than the sum of its proper divisors (19294271).

2180239741 is a wasteful number, since it uses less digits than its factorization.

2180239741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19294270.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2180239741 is about 46693.0373931703. The cubic root of 2180239741 is about 1296.6857869371.

The spelling of 2180239741 in words is "two billion, one hundred eighty million, two hundred thirty-nine thousand, seven hundred forty-one".