3802879261 has 2 divisors, whose sum is σ = 3802879262. Its totient is φ = 3802879260.

The previous prime is 3802879259. The next prime is 3802879307. The reversal of 3802879261 is 1629782083.

3802879261 = 43605² + 43606².

It is an a-pointer prime, because the next prime (3802879307) can be obtained adding 3802879261 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1901483236 + 1901396025 = 43606^2 + 43605^2 .

It is a cyclic number.

It is not a de Polignac number, because 3802879261 - 2¹ = 3802879259 is a prime.

It is a super-2 number, since 2×3802879261² = 28923781347487812242, which contains 22 as substring.

Together with 3802879259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3802879361) 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, 1901439630 + 1901439631.

It is an arithmetic number, because the mean of its divisors is an integer number (1901439631).

Almost surely, 2^3802879261 is an apocalyptic number.

3802879261 is the 43606-th centered square number.

It is an amenable number.

3802879261 is a deficient number, since it is larger than the sum of its proper divisors (1).

3802879261 is an equidigital number, since it uses as much as digits as its factorization.

3802879261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 3802879261 is about 61667.4894981140. The cubic root of 3802879261 is about 1560.8847792903.

The spelling of 3802879261 in words is "three billion, eight hundred two million, eight hundred seventy-nine thousand, two hundred sixty-one".