2630971287 has 40 divisors (see below), whose sum is σ = 4728099200. Its totient is φ = 1424279376.

The previous prime is 2630971261. The next prime is 2630971307. The reversal of 2630971287 is 7821790362.

2630971287 is a `hidden beast` number, since 2 + 630 + 9 + 7 + 1 + 2 + 8 + 7 = 666.

It is not a de Polignac number, because 2630971287 - 2⁶ = 2630971223 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 (2630971237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111337 + ... + 132882.

It is an arithmetic number, because the mean of its divisors is an integer number (118202480).

Almost surely, 2^2630971287 is an apocalyptic number.

2630971287 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2630971287 is a deficient number, since it is larger than the sum of its proper divisors (2097127913).

2630971287 is a wasteful number, since it uses less digits than its factorization.

2630971287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244257 (or 244248 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 2630971287 is about 51292.9945216693. The cubic root of 2630971287 is about 1380.5072851448.

The spelling of 2630971287 in words is "two billion, six hundred thirty million, nine hundred seventy-one thousand, two hundred eighty-seven".