1361367905 has 8 divisors (see below), whose sum is σ = 1729738152. Its totient is φ = 1025029888.

The previous prime is 1361367901. The next prime is 1361367923. The reversal of 1361367905 is 5097631631.

It can be written as a sum of positive squares in 4 ways, for example, as 89946256 + 1271421649 = 9484^2 + 35657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1361367905 - 2² = 1361367901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361367901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8007962 + ... + 8008131.

It is an arithmetic number, because the mean of its divisors is an integer number (216217269).

Almost surely, 2^1361367905 is an apocalyptic number.

It is an amenable number.

1361367905 is a deficient number, since it is larger than the sum of its proper divisors (368370247).

1361367905 is a wasteful number, since it uses less digits than its factorization.

1361367905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16016115.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1361367905 is about 36896.7194341177. The cubic root of 1361367905 is about 1108.3029840497.

It can be divided in two parts, 13613 and 67905, that added together give a palindrome (81518).

The spelling of 1361367905 in words is "one billion, three hundred sixty-one million, three hundred sixty-seven thousand, nine hundred five".