1368574221 has 16 divisors (see below), whose sum is σ = 2176118784. Its totient is φ = 748040304.

The previous prime is 1368574213. The next prime is 1368574297. The reversal of 1368574221 is 1224758631.

It is not a de Polignac number, because 1368574221 - 2³ = 1368574213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368574221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368574121) 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 15 ways as a sum of consecutive naturals, for example, 1416261 + ... + 1417226.

It is an arithmetic number, because the mean of its divisors is an integer number (136007424).

Almost surely, 2^1368574221 is an apocalyptic number.

It is an amenable number.

1368574221 is a deficient number, since it is larger than the sum of its proper divisors (807544563).

1368574221 is a wasteful number, since it uses less digits than its factorization.

1368574221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833520.

The product of its digits is 80640, while the sum is 39.

The square root of 1368574221 is about 36994.2457822835. The cubic root of 1368574221 is about 1110.2551211331.

The spelling of 1368574221 in words is "one billion, three hundred sixty-eight million, five hundred seventy-four thousand, two hundred twenty-one".