12387631894 has 32 divisors (see below), whose sum is σ = 21914265600. Its totient is φ = 5190207840.

The previous prime is 12387631849. The next prime is 12387631897. The reversal of 12387631894 is 49813678321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387631897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385014 + ... + 415945.

It is an arithmetic number, because the mean of its divisors is an integer number (684820800).

Almost surely, 2^12387631894 is an apocalyptic number.

12387631894 is a deficient number, since it is larger than the sum of its proper divisors (9526633706).

12387631894 is a wasteful number, since it uses less digits than its factorization.

12387631894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801028.

The product of its digits is 1741824, while the sum is 52.

The spelling of 12387631894 in words is "twelve billion, three hundred eighty-seven million, six hundred thirty-one thousand, eight hundred ninety-four".