1368201921 has 8 divisors (see below), whose sum is σ = 1825430880. Its totient is φ = 911553792.

The previous prime is 1368201911. The next prime is 1368201929. The reversal of 1368201921 is 1291028631.

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

It is not a de Polignac number, because 1368201921 - 2¹⁴ = 1368185537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1368201929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139680 + ... + 149153.

It is an arithmetic number, because the mean of its divisors is an integer number (228178860).

Almost surely, 2^1368201921 is an apocalyptic number.

It is an amenable number.

1368201921 is a deficient number, since it is larger than the sum of its proper divisors (457228959).

1368201921 is a wasteful number, since it uses less digits than its factorization.

1368201921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290415.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1368201921 is about 36989.2135763928. The cubic root of 1368201921 is about 1110.1544359425.

The spelling of 1368201921 in words is "one billion, three hundred sixty-eight million, two hundred one thousand, nine hundred twenty-one".