2881090985 has 8 divisors (see below), whose sum is σ = 3576526920. Its totient is φ = 2225394304.

The previous prime is 2881090967. The next prime is 2881090987. The reversal of 2881090985 is 5890901882.

It can be written as a sum of positive squares in 4 ways, for example, as 134073241 + 2747017744 = 11579^2 + 52412^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2881090985 - 2²² = 2876896681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2881090987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9934652 + ... + 9934941.

It is an arithmetic number, because the mean of its divisors is an integer number (447065865).

Almost surely, 2^2881090985 is an apocalyptic number.

It is an amenable number.

2881090985 is a deficient number, since it is larger than the sum of its proper divisors (695435935).

2881090985 is a wasteful number, since it uses less digits than its factorization.

2881090985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19869627.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 2881090985 is about 53675.7951501419. The cubic root of 2881090985 is about 1422.9369526917.

The spelling of 2881090985 in words is "two billion, eight hundred eighty-one million, ninety thousand, nine hundred eighty-five".