2804621887 has 2 divisors, whose sum is σ = 2804621888. Its totient is φ = 2804621886.

The previous prime is 2804621861. The next prime is 2804621893. The reversal of 2804621887 is 7881264082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2804621887 - 2¹⁵ = 2804589119 is a prime.

It is a super-3 number, since 3×2804621887³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2804621857) 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, 1402310943 + 1402310944.

It is an arithmetic number, because the mean of its divisors is an integer number (1402310944).

Almost surely, 2^2804621887 is an apocalyptic number.

2804621887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2804621887 is an equidigital number, since it uses as much as digits as its factorization.

2804621887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 2804621887 is about 52958.6809408996. The cubic root of 2804621887 is about 1410.2348395795.

It can be divided in two parts, 28046218 and 87, that added together give a triangular number (28046305 = T₇₄₈₉).

The spelling of 2804621887 in words is "two billion, eight hundred four million, six hundred twenty-one thousand, eight hundred eighty-seven".