1878646113 has 12 divisors (see below), whose sum is σ = 2719466880. Its totient is φ = 1249722936.

The previous prime is 1878646093. The next prime is 1878646123. The reversal of 1878646113 is 3116468781.

1878646113 is a `hidden beast` number, since 187 + 8 + 6 + 461 + 1 + 3 = 666.

It is not a de Polignac number, because 1878646113 - 2²⁵ = 1845091681 is a prime.

It is a super-2 number, since 2×1878646113² = 7058622435780017538, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1878646123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221253 + ... + 229586.

It is an arithmetic number, because the mean of its divisors is an integer number (226622240).

Almost surely, 2^1878646113 is an apocalyptic number.

It is an amenable number.

1878646113 is a deficient number, since it is larger than the sum of its proper divisors (840820767).

1878646113 is a wasteful number, since it uses less digits than its factorization.

1878646113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451308 (or 451305 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 1878646113 is about 43343.3514278718. The cubic root of 1878646113 is about 1233.9048163245.

The spelling of 1878646113 in words is "one billion, eight hundred seventy-eight million, six hundred forty-six thousand, one hundred thirteen".