2887929770881 has 3 divisors (see below), whose sum is σ = 2887931470273. Its totient is φ = 2887928071490.

The previous prime is 2887929770863. The next prime is 2887929770903. The reversal of 2887929770881 is 1880779297882.

The square root of 2887929770881 is 1699391.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2887929770881 - 2²⁹ = 2887392899969 is a prime.

It is a super-2 number, since 2×2887929770881² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2887929770798 and 2887929770807.

It is not an unprimeable number, because it can be changed into a prime (2887929770861) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 849696 + ... + 2549086.

Almost surely, 2^{2887929770881} is an apocalyptic number.

2887929770881 is the 1699391-st square number.

2887929770881 is the 849696-th centered octagonal number.

It is an amenable number.

2887929770881 is a deficient number, since it is larger than the sum of its proper divisors (1699392).

2887929770881 is an frugal number, since it uses more digits than its factorization.

2887929770881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398782 (or 1699391 counting only the distinct ones).

The product of its (nonzero) digits is 455196672, while the sum is 76.

The spelling of 2887929770881 in words is "two trillion, eight hundred eighty-seven billion, nine hundred twenty-nine million, seven hundred seventy thousand, eight hundred eighty-one".