1368204421 has 16 divisors (see below), whose sum is σ = 1526636160. Its totient is φ = 1218585600.

The previous prime is 1368204419. The next prime is 1368204449. The reversal of 1368204421 is 1244028631.

It is a cyclic number.

It is not a de Polignac number, because 1368204421 - 2¹ = 1368204419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368244421) 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, 386160 + ... + 389686.

It is an arithmetic number, because the mean of its divisors is an integer number (95414760).

Almost surely, 2^1368204421 is an apocalyptic number.

It is an amenable number.

1368204421 is a deficient number, since it is larger than the sum of its proper divisors (158431739).

1368204421 is a wasteful number, since it uses less digits than its factorization.

1368204421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1368204421 is about 36989.2473700128. The cubic root of 1368204421 is about 1110.1551121060.

The spelling of 1368204421 in words is "one billion, three hundred sixty-eight million, two hundred four thousand, four hundred twenty-one".