2149509863 has 2 divisors, whose sum is σ = 2149509864. Its totient is φ = 2149509862.

The previous prime is 2149509821. The next prime is 2149509871. The reversal of 2149509863 is 3689059412.

2149509863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2149509863 - 2¹² = 2149505767 is a prime.

It is a super-2 number, since 2×2149509863² = 9240785302268557538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149509883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074754931 + 1074754932.

It is an arithmetic number, because the mean of its divisors is an integer number (1074754932).

Almost surely, 2^2149509863 is an apocalyptic number.

2149509863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149509863 is an equidigital number, since it uses as much as digits as its factorization.

2149509863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 2149509863 is about 46362.8068930258. The cubic root of 2149509863 is about 1290.5647954477.

The spelling of 2149509863 in words is "two billion, one hundred forty-nine million, five hundred nine thousand, eight hundred sixty-three".