1361262541 has 2 divisors, whose sum is σ = 1361262542. Its totient is φ = 1361262540.

The previous prime is 1361262533. The next prime is 1361262563. The reversal of 1361262541 is 1452621631.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1226470441 + 134792100 = 35021^2 + 11610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361262541 - 2³ = 1361262533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361262041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680631270 + 680631271.

It is an arithmetic number, because the mean of its divisors is an integer number (680631271).

Almost surely, 2^1361262541 is an apocalyptic number.

It is an amenable number.

1361262541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361262541 is an equidigital number, since it uses as much as digits as its factorization.

1361262541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 1361262541 is about 36895.2915830733. The cubic root of 1361262541 is about 1108.2743906896.

The spelling of 1361262541 in words is "one billion, three hundred sixty-one million, two hundred sixty-two thousand, five hundred forty-one".