1361411549 has 4 divisors (see below), whose sum is σ = 1361487264. Its totient is φ = 1361335836.

The previous prime is 1361411543. The next prime is 1361411573. The reversal of 1361411549 is 9451141631.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1361411549 - 2⁴ = 1361411533 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 (1361411543) 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, 6224 + ... + 52550.

It is an arithmetic number, because the mean of its divisors is an integer number (340371816).

Almost surely, 2^1361411549 is an apocalyptic number.

It is an amenable number.

1361411549 is a deficient number, since it is larger than the sum of its proper divisors (75715).

1361411549 is an equidigital number, since it uses as much as digits as its factorization.

1361411549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75714.

The product of its digits is 12960, while the sum is 35.

The square root of 1361411549 is about 36897.3108640725. The cubic root of 1361411549 is about 1108.3148275928.

The spelling of 1361411549 in words is "one billion, three hundred sixty-one million, four hundred eleven thousand, five hundred forty-nine".