2123180739 has 6 divisors (see below), whose sum is σ = 3066816636. Its totient is φ = 1415453820.

The previous prime is 2123180729. The next prime is 2123180743. The reversal of 2123180739 is 9370813212.

It is not a de Polignac number, because 2123180739 - 2⁴ = 2123180723 is a prime.

It is a super-2 number, since 2×2123180739² = 9015792900921172242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2123180729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117954477 + ... + 117954494.

It is an arithmetic number, because the mean of its divisors is an integer number (511136106).

Almost surely, 2^2123180739 is an apocalyptic number.

2123180739 is a deficient number, since it is larger than the sum of its proper divisors (943635897).

2123180739 is a wasteful number, since it uses less digits than its factorization.

2123180739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235908977 (or 235908974 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2123180739 is about 46077.9854051802. The cubic root of 2123180739 is about 1285.2738017694.

The spelling of 2123180739 in words is "two billion, one hundred twenty-three million, one hundred eighty thousand, seven hundred thirty-nine".