1878632113 has 4 divisors (see below), whose sum is σ = 1895867380. Its totient is φ = 1861396848.

The previous prime is 1878632083. The next prime is 1878632131. The reversal of 1878632113 is 3112368781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3112368781 = 163 ⋅19094287.

It can be written as a sum of positive squares in 2 ways, for example, as 1706681344 + 171950769 = 41312^2 + 13113^2 .

It is a cyclic number.

It is not a de Polignac number, because 1878632113 - 2¹⁷ = 1878501041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1878632183) 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, 8617470 + ... + 8617687.

It is an arithmetic number, because the mean of its divisors is an integer number (473966845).

Almost surely, 2^1878632113 is an apocalyptic number.

It is an amenable number.

1878632113 is a deficient number, since it is larger than the sum of its proper divisors (17235267).

1878632113 is a wasteful number, since it uses less digits than its factorization.

1878632113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235266.

The product of its digits is 48384, while the sum is 40.

The square root of 1878632113 is about 43343.1899264463. The cubic root of 1878632113 is about 1233.9017512252.

The spelling of 1878632113 in words is "one billion, eight hundred seventy-eight million, six hundred thirty-two thousand, one hundred thirteen".