1368479722 has 4 divisors (see below), whose sum is σ = 2052719586. Its totient is φ = 684239860.

The previous prime is 1368479713. The next prime is 1368479729. The reversal of 1368479722 is 2279748631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1156748121 + 211731601 = 34011^2 + 14551^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1368479729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342119929 + ... + 342119932.

Almost surely, 2^1368479722 is an apocalyptic number.

1368479722 is a deficient number, since it is larger than the sum of its proper divisors (684239864).

1368479722 is an equidigital number, since it uses as much as digits as its factorization.

1368479722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684239863.

The product of its digits is 1016064, while the sum is 49.

The square root of 1368479722 is about 36992.9685480903. The cubic root of 1368479722 is about 1110.2295664568.

The spelling of 1368479722 in words is "one billion, three hundred sixty-eight million, four hundred seventy-nine thousand, seven hundred twenty-two".