1368678473 has 4 divisors (see below), whose sum is σ = 1370366928. Its totient is φ = 1366990020.

The previous prime is 1368678391. The next prime is 1368678491. The reversal of 1368678473 is 3748768631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1368678473 - 2²⁰ = 1367629897 is a prime.

It is a super-2 number, since 2×1368678473² = 3746561524907223458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1368677473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843011 + ... + 844632.

It is an arithmetic number, because the mean of its divisors is an integer number (342591732).

Almost surely, 2^1368678473 is an apocalyptic number.

It is an amenable number.

1368678473 is a deficient number, since it is larger than the sum of its proper divisors (1688455).

1368678473 is an equidigital number, since it uses as much as digits as its factorization.

1368678473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688454.

The product of its digits is 4064256, while the sum is 53.

The square root of 1368678473 is about 36995.6547853934. The cubic root of 1368678473 is about 1110.2833118775.

The spelling of 1368678473 in words is "one billion, three hundred sixty-eight million, six hundred seventy-eight thousand, four hundred seventy-three".