2981012905 has 16 divisors (see below), whose sum is σ = 3853909584. Its totient is φ = 2200492800.

The previous prime is 2981012899. The next prime is 2981012941. The reversal of 2981012905 is 5092101892.

It can be written as a sum of positive squares in 8 ways, for example, as 240281001 + 2740731904 = 15501^2 + 52352^2 .

It is not a de Polignac number, because 2981012905 - 2⁹ = 2981012393 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 189855 + ... + 204955.

It is an arithmetic number, because the mean of its divisors is an integer number (240869349).

Almost surely, 2^2981012905 is an apocalyptic number.

It is an amenable number.

2981012905 is a deficient number, since it is larger than the sum of its proper divisors (872896679).

2981012905 is a wasteful number, since it uses less digits than its factorization.

2981012905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18156.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 2981012905 is about 54598.6529595740. The cubic root of 2981012905 is about 1439.2004474993.

The spelling of 2981012905 in words is "two billion, nine hundred eighty-one million, twelve thousand, nine hundred five".