1368676638 has 48 divisors (see below), whose sum is σ = 3391296480. Its totient is φ = 390797568.

The previous prime is 1368676619. The next prime is 1368676747. The reversal of 1368676638 is 8366768631.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287058 + ... + 291786.

It is an arithmetic number, because the mean of its divisors is an integer number (70652010).

Almost surely, 2^1368676638 is an apocalyptic number.

1368676638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1368676638 is an abundant number, since it is smaller than the sum of its proper divisors (2022619842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1368676638 is a wasteful number, since it uses less digits than its factorization.

1368676638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7041 (or 7038 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 1368676638 is about 36995.6299851753. The cubic root of 1368676638 is about 1110.2828156882.

The spelling of 1368676638 in words is "one billion, three hundred sixty-eight million, six hundred seventy-six thousand, six hundred thirty-eight".