1863134653 has 2 divisors, whose sum is σ = 1863134654. Its totient is φ = 1863134652.

The previous prime is 1863134639. The next prime is 1863134671. The reversal of 1863134653 is 3564313681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1627880409 + 235254244 = 40347^2 + 15338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1863134653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1863134683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 931567326 + 931567327.

It is an arithmetic number, because the mean of its divisors is an integer number (931567327).

Almost surely, 2^1863134653 is an apocalyptic number.

It is an amenable number.

1863134653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863134653 is an equidigital number, since it uses as much as digits as its factorization.

1863134653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 1863134653 is about 43164.0435200411. The cubic root of 1863134653 is about 1230.4994232935.

The spelling of 1863134653 in words is "one billion, eight hundred sixty-three million, one hundred thirty-four thousand, six hundred fifty-three".