1611426563 has 2 divisors, whose sum is σ = 1611426564. Its totient is φ = 1611426562.

The previous prime is 1611426547. The next prime is 1611426577. The reversal of 1611426563 is 3656241161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1611426563 - 2⁴ = 1611426547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1611426263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805713281 + 805713282.

It is an arithmetic number, because the mean of its divisors is an integer number (805713282).

Almost surely, 2^1611426563 is an apocalyptic number.

1611426563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611426563 is an equidigital number, since it uses as much as digits as its factorization.

1611426563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 1611426563 is about 40142.5779316675. The cubic root of 1611426563 is about 1172.3847827707.

The spelling of 1611426563 in words is "one billion, six hundred eleven million, four hundred twenty-six thousand, five hundred sixty-three".