2140550957 has 2 divisors, whose sum is σ = 2140550958. Its totient is φ = 2140550956.

The previous prime is 2140550953. The next prime is 2140550969. The reversal of 2140550957 is 7590550412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1503190441 + 637360516 = 38771^2 + 25246^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140550957 - 2² = 2140550953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140550957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140550953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070275478 + 1070275479.

It is an arithmetic number, because the mean of its divisors is an integer number (1070275479).

Almost surely, 2^2140550957 is an apocalyptic number.

It is an amenable number.

2140550957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140550957 is an equidigital number, since it uses as much as digits as its factorization.

2140550957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 2140550957 is about 46266.0886287138. The cubic root of 2140550957 is about 1288.7693242606.

The spelling of 2140550957 in words is "two billion, one hundred forty million, five hundred fifty thousand, nine hundred fifty-seven".