1368626473 has 4 divisors (see below), whose sum is σ = 1394449668. Its totient is φ = 1342803280.

The previous prime is 1368626461. The next prime is 1368626503. The reversal of 1368626473 is 3746268631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 377447184 + 991179289 = 19428^2 + 31483^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368626473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368626443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12911518 + ... + 12911623.

It is an arithmetic number, because the mean of its divisors is an integer number (348612417).

Almost surely, 2^1368626473 is an apocalyptic number.

It is an amenable number.

1368626473 is a deficient number, since it is larger than the sum of its proper divisors (25823195).

1368626473 is an equidigital number, since it uses as much as digits as its factorization.

1368626473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25823194.

The product of its digits is 870912, while the sum is 46.

The square root of 1368626473 is about 36994.9519934815. The cubic root of 1368626473 is about 1110.2692507559.

The spelling of 1368626473 in words is "one billion, three hundred sixty-eight million, six hundred twenty-six thousand, four hundred seventy-three".