1368841855 has 4 divisors (see below), whose sum is σ = 1642610232. Its totient is φ = 1095073480.

The previous prime is 1368841843. The next prime is 1368841861. The reversal of 1368841855 is 5581488631.

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

It is not a de Polignac number, because 1368841855 - 2¹⁵ = 1368809087 is a prime.

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 a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1368841799 and 1368841808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136884181 + ... + 136884190.

It is an arithmetic number, because the mean of its divisors is an integer number (410652558).

Almost surely, 2^1368841855 is an apocalyptic number.

1368841855 is a deficient number, since it is larger than the sum of its proper divisors (273768377).

1368841855 is an equidigital number, since it uses as much as digits as its factorization.

1368841855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273768376.

The product of its digits is 921600, while the sum is 49.

The square root of 1368841855 is about 36997.8628436833. The cubic root of 1368841855 is about 1110.3274890635.

The spelling of 1368841855 in words is "one billion, three hundred sixty-eight million, eight hundred forty-one thousand, eight hundred fifty-five".