1361531453 has 2 divisors, whose sum is σ = 1361531454. Its totient is φ = 1361531452.

The previous prime is 1361531449. The next prime is 1361531471. The reversal of 1361531453 is 3541351631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937706884 + 423824569 = 30622^2 + 20587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361531453 - 2² = 1361531449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361531443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680765726 + 680765727.

It is an arithmetic number, because the mean of its divisors is an integer number (680765727).

Almost surely, 2^1361531453 is an apocalyptic number.

It is an amenable number.

1361531453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361531453 is an equidigital number, since it uses as much as digits as its factorization.

1361531453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 32.

The square root of 1361531453 is about 36898.9356621570. The cubic root of 1361531453 is about 1108.3473642837.

The spelling of 1361531453 in words is "one billion, three hundred sixty-one million, five hundred thirty-one thousand, four hundred fifty-three".