2870630261 has 2 divisors, whose sum is σ = 2870630262. Its totient is φ = 2870630260.

The previous prime is 2870630201. The next prime is 2870630267. The reversal of 2870630261 is 1620360782.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2494503025 + 376127236 = 49945^2 + 19394^2 .

It is a cyclic number.

It is not a de Polignac number, because 2870630261 - 2²⁶ = 2803521397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2870630267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1435315130 + 1435315131.

It is an arithmetic number, because the mean of its divisors is an integer number (1435315131).

Almost surely, 2^2870630261 is an apocalyptic number.

It is an amenable number.

2870630261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2870630261 is an equidigital number, since it uses as much as digits as its factorization.

2870630261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2870630261 is about 53578.2629524325. The cubic root of 2870630261 is about 1421.2127213621.

The spelling of 2870630261 in words is "two billion, eight hundred seventy million, six hundred thirty thousand, two hundred sixty-one".