2801807881 has 2 divisors, whose sum is σ = 2801807882. Its totient is φ = 2801807880.

The previous prime is 2801807873. The next prime is 2801807891. The reversal of 2801807881 is 1887081082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2210880400 + 590927481 = 47020^2 + 24309^2 .

It is a cyclic number.

It is not a de Polignac number, because 2801807881 - 2³ = 2801807873 is a prime.

It is a super-2 number, since 2×2801807881² = 15700254804067420322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2801807861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400903940 + 1400903941.

It is an arithmetic number, because the mean of its divisors is an integer number (1400903941).

Almost surely, 2^2801807881 is an apocalyptic number.

It is an amenable number.

2801807881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801807881 is an equidigital number, since it uses as much as digits as its factorization.

2801807881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57344, while the sum is 43.

The square root of 2801807881 is about 52932.1063344356. The cubic root of 2801807881 is about 1409.7630306121.

The spelling of 2801807881 in words is "two billion, eight hundred one million, eight hundred seven thousand, eight hundred eighty-one".