2387886881 has 4 divisors (see below), whose sum is σ = 2428359600. Its totient is φ = 2347414164.

The previous prime is 2387886877. The next prime is 2387886913. The reversal of 2387886881 is 1886887832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2387886881 - 2² = 2387886877 is a prime.

It is a super-2 number, since 2×2387886881² = 11404007512903816322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 40472659 = 2387886881 / (2 + 3 + 8 + 7 + 8 + 8 + 6 + 8 + 8 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2387886881.

It is not an unprimeable number, because it can be changed into a prime (2387886811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20236271 + ... + 20236388.

It is an arithmetic number, because the mean of its divisors is an integer number (607089900).

Almost surely, 2^2387886881 is an apocalyptic number.

It is an amenable number.

2387886881 is a deficient number, since it is larger than the sum of its proper divisors (40472719).

2387886881 is an equidigital number, since it uses as much as digits as its factorization.

2387886881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40472718.

The product of its digits is 8257536, while the sum is 59.

The square root of 2387886881 is about 48866.0094646575. The cubic root of 2387886881 is about 1336.6096219322.

The spelling of 2387886881 in words is "two billion, three hundred eighty-seven million, eight hundred eighty-six thousand, eight hundred eighty-one".