1161555463 has 2 divisors, whose sum is σ = 1161555464. Its totient is φ = 1161555462.

The previous prime is 1161555427. The next prime is 1161555491. The reversal of 1161555463 is 3645551611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1161555463 - 2²⁹ = 624684551 is a prime.

It is a super-2 number, since 2×1161555463² = 2698422187250288738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161555163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580777731 + 580777732.

It is an arithmetic number, because the mean of its divisors is an integer number (580777732).

Almost surely, 2^1161555463 is an apocalyptic number.

1161555463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161555463 is an equidigital number, since it uses as much as digits as its factorization.

1161555463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54000, while the sum is 37.

The square root of 1161555463 is about 34081.6000651378. The cubic root of 1161555463 is about 1051.1870062067.

The spelling of 1161555463 in words is "one billion, one hundred sixty-one million, five hundred fifty-five thousand, four hundred sixty-three".