1863135137 has 2 divisors, whose sum is σ = 1863135138. Its totient is φ = 1863135136.

The previous prime is 1863135101. The next prime is 1863135181. The reversal of 1863135137 is 7315313681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1612102801 + 251032336 = 40151^2 + 15844^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863135137 - 2¹⁴ = 1863118753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1863135137.

It is not a weakly prime, because it can be changed into another prime (1863135737) 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, 931567568 + 931567569.

It is an arithmetic number, because the mean of its divisors is an integer number (931567569).

Almost surely, 2^1863135137 is an apocalyptic number.

It is an amenable number.

1863135137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1863135137 is an equidigital number, since it uses as much as digits as its factorization.

1863135137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 1863135137 is about 43164.0491265590. The cubic root of 1863135137 is about 1230.4995298454.

The spelling of 1863135137 in words is "one billion, eight hundred sixty-three million, one hundred thirty-five thousand, one hundred thirty-seven".