1361113769 has 4 divisors (see below), whose sum is σ = 1371049044. Its totient is φ = 1351178496.

The previous prime is 1361113759. The next prime is 1361113771. The reversal of 1361113769 is 9673111631.

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 575040400 + 786073369 = 23980^2 + 28037^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361113769 - 2¹⁶ = 1361048233 is a prime.

It is a super-2 number, since 2×1361113769² = 3705261384322770722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1361113739) 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 3 ways as a sum of consecutive naturals, for example, 4967432 + ... + 4967705.

It is an arithmetic number, because the mean of its divisors is an integer number (342762261).

Almost surely, 2^1361113769 is an apocalyptic number.

It is an amenable number.

1361113769 is a deficient number, since it is larger than the sum of its proper divisors (9935275).

1361113769 is an equidigital number, since it uses as much as digits as its factorization.

1361113769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9935274.

The product of its digits is 20412, while the sum is 38.

The square root of 1361113769 is about 36893.2753899677. The cubic root of 1361113769 is about 1108.2340148866.

The spelling of 1361113769 in words is "one billion, three hundred sixty-one million, one hundred thirteen thousand, seven hundred sixty-nine".