1368673221 has 8 divisors (see below), whose sum is σ = 1825571520. Its totient is φ = 912111872.

The previous prime is 1368673217. The next prime is 1368673249. The reversal of 1368673221 is 1223768631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1368673221 - 2² = 1368673217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368673221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368673261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74601 + ... + 91118.

It is an arithmetic number, because the mean of its divisors is an integer number (228196440).

Almost surely, 2^1368673221 is an apocalyptic number.

It is an amenable number.

1368673221 is a deficient number, since it is larger than the sum of its proper divisors (456898299).

1368673221 is a wasteful number, since it uses less digits than its factorization.

1368673221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168475.

The product of its digits is 72576, while the sum is 39.

The square root of 1368673221 is about 36995.5838040164. The cubic root of 1368673221 is about 1110.2818917204.

The spelling of 1368673221 in words is "one billion, three hundred sixty-eight million, six hundred seventy-three thousand, two hundred twenty-one".