2102698639 has 2 divisors, whose sum is σ = 2102698640. Its totient is φ = 2102698638.

The previous prime is 2102698589. The next prime is 2102698649. The reversal of 2102698639 is 9368962012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2102698639 - 2¹⁵ = 2102665871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102698649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051349319 + 1051349320.

It is an arithmetic number, because the mean of its divisors is an integer number (1051349320).

Almost surely, 2^2102698639 is an apocalyptic number.

2102698639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102698639 is an equidigital number, since it uses as much as digits as its factorization.

2102698639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 2102698639 is about 45855.1920615321. The cubic root of 2102698639 is about 1281.1274731801.

The spelling of 2102698639 in words is "two billion, one hundred two million, six hundred ninety-eight thousand, six hundred thirty-nine".