2144358397 has 4 divisors (see below), whose sum is σ = 2218301820. Its totient is φ = 2070414976.

The previous prime is 2144358331. The next prime is 2144358407. The reversal of 2144358397 is 7938534412.

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 1634908356 + 509450041 = 40434^2 + 22571^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144358397 - 2⁷ = 2144358269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144358197) 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, 36971668 + ... + 36971725.

It is an arithmetic number, because the mean of its divisors is an integer number (554575455).

Almost surely, 2^2144358397 is an apocalyptic number.

It is an amenable number.

2144358397 is a deficient number, since it is larger than the sum of its proper divisors (73943423).

2144358397 is an equidigital number, since it uses as much as digits as its factorization.

2144358397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73943422.

The product of its digits is 725760, while the sum is 46.

The square root of 2144358397 is about 46307.2175475919. The cubic root of 2144358397 is about 1289.5329914201.

The spelling of 2144358397 in words is "two billion, one hundred forty-four million, three hundred fifty-eight thousand, three hundred ninety-seven".