2887800381 has 24 divisors (see below), whose sum is σ = 4333315584. Its totient is φ = 1851202080.

The previous prime is 2887800379. The next prime is 2887800389. The reversal of 2887800381 is 1830087882.

It is a happy number.

It is not a de Polignac number, because 2887800381 - 2¹ = 2887800379 is a prime.

It is a super-2 number, since 2×2887800381² = 16678782081007490322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887800389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10840 + ... + 76766.

It is an arithmetic number, because the mean of its divisors is an integer number (180554816).

Almost surely, 2^2887800381 is an apocalyptic number.

It is an amenable number.

2887800381 is a deficient number, since it is larger than the sum of its proper divisors (1445515203).

2887800381 is a wasteful number, since it uses less digits than its factorization.

2887800381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66121 (or 66118 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 2887800381 is about 53738.2580756020. The cubic root of 2887800381 is about 1424.0406602993.

The spelling of 2887800381 in words is "two billion, eight hundred eighty-seven million, eight hundred thousand, three hundred eighty-one".