2981887 has 2 divisors, whose sum is σ = 2981888. Its totient is φ = 2981886.

The previous prime is 2981873. The next prime is 2981897. The reversal of 2981887 is 7881892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2981887 - 2¹⁵ = 2949119 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2981827) 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 as a sum of consecutive naturals, namely, 1490943 + 1490944.

It is an arithmetic number, because the mean of its divisors is an integer number (1490944).

2^2981887 is an apocalyptic number.

2981887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2981887 is an equidigital number, since it uses as much as digits as its factorization.

2981887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 43.

The square root of 2981887 is about 1726.8141185432. The cubic root of 2981887 is about 143.9341101590.

The spelling of 2981887 in words is "two million, nine hundred eighty-one thousand, eight hundred eighty-seven".