2427887381 has 4 divisors (see below), whose sum is σ = 2428025292. Its totient is φ = 2427749472.

The previous prime is 2427887369. The next prime is 2427887411. The reversal of 2427887381 is 1837887242.

2427887381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1837887242 = 2 ⋅918943621.

It can be written as a sum of positive squares in 2 ways, for example, as 84456100 + 2343431281 = 9190^2 + 48409^2 .

It is a cyclic number.

It is not a de Polignac number, because 2427887381 - 2¹⁸ = 2427625237 is a prime.

It is a super-2 number, since 2×2427887381² = 11789274269638078322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2427887081) 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, 37880 + ... + 79313.

It is an arithmetic number, because the mean of its divisors is an integer number (607006323).

Almost surely, 2^2427887381 is an apocalyptic number.

It is an amenable number.

2427887381 is a deficient number, since it is larger than the sum of its proper divisors (137911).

2427887381 is a wasteful number, since it uses less digits than its factorization.

2427887381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137910.

The product of its digits is 1204224, while the sum is 50.

The square root of 2427887381 is about 49273.5971997174. The cubic root of 2427887381 is about 1344.0317019181.

The spelling of 2427887381 in words is "two billion, four hundred twenty-seven million, eight hundred eighty-seven thousand, three hundred eighty-one".