2440344157 has 2 divisors, whose sum is σ = 2440344158. Its totient is φ = 2440344156.

The previous prime is 2440344131. The next prime is 2440344163. The reversal of 2440344157 is 7514430442.

2440344157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1977491961 + 462852196 = 44469^2 + 21514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440344157 - 2⁷ = 2440344029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2440344167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220172078 + 1220172079.

It is an arithmetic number, because the mean of its divisors is an integer number (1220172079).

Almost surely, 2^2440344157 is an apocalyptic number.

It is an amenable number.

2440344157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440344157 is an equidigital number, since it uses as much as digits as its factorization.

2440344157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 2440344157 is about 49399.8396454887. The cubic root of 2440344157 is about 1346.3263923612.

Adding to 2440344157 its reverse (7514430442), we get a palindrome (9954774599).

The spelling of 2440344157 in words is "two billion, four hundred forty million, three hundred forty-four thousand, one hundred fifty-seven".