2740387957 has 2 divisors, whose sum is σ = 2740387958. Its totient is φ = 2740387956.

The previous prime is 2740387939. The next prime is 2740387961. The reversal of 2740387957 is 7597830472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1640736036 + 1099651921 = 40506^2 + 33161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2740387957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2740387907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370193978 + 1370193979.

It is an arithmetic number, because the mean of its divisors is an integer number (1370193979).

Almost surely, 2^2740387957 is an apocalyptic number.

It is an amenable number.

2740387957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740387957 is an equidigital number, since it uses as much as digits as its factorization.

2740387957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2963520, while the sum is 52.

The square root of 2740387957 is about 52348.7149507989. The cubic root of 2740387957 is about 1399.3854372356.

The spelling of 2740387957 in words is "two billion, seven hundred forty million, three hundred eighty-seven thousand, nine hundred fifty-seven".