1361411543 has 2 divisors, whose sum is σ = 1361411544. Its totient is φ = 1361411542.

The previous prime is 1361411533. The next prime is 1361411573. The reversal of 1361411543 is 3451141631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1361411543 - 2¹⁴ = 1361395159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361411533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680705771 + 680705772.

It is an arithmetic number, because the mean of its divisors is an integer number (680705772).

Almost surely, 2^1361411543 is an apocalyptic number.

1361411543 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361411543 is an equidigital number, since it uses as much as digits as its factorization.

1361411543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 1361411543 is about 36897.3107827657. The cubic root of 1361411543 is about 1108.3148259647.

The spelling of 1361411543 in words is "one billion, three hundred sixty-one million, four hundred eleven thousand, five hundred forty-three".