1368271477 has 4 divisors (see below), whose sum is σ = 1368452556. Its totient is φ = 1368090400.

The previous prime is 1368271451. The next prime is 1368271483. The reversal of 1368271477 is 7741728631.

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 1230185476 + 138086001 = 35074^2 + 11751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368271477 - 2⁷ = 1368271349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368274477) 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, 78688 + ... + 94489.

It is an arithmetic number, because the mean of its divisors is an integer number (342113139).

Almost surely, 2^1368271477 is an apocalyptic number.

It is an amenable number.

1368271477 is a deficient number, since it is larger than the sum of its proper divisors (181079).

1368271477 is an equidigital number, since it uses as much as digits as its factorization.

1368271477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181078.

The product of its digits is 395136, while the sum is 46.

The square root of 1368271477 is about 36990.1537844870. The cubic root of 1368271477 is about 1110.1732481252.

The spelling of 1368271477 in words is "one billion, three hundred sixty-eight million, two hundred seventy-one thousand, four hundred seventy-seven".