1185428137 has 2 divisors, whose sum is σ = 1185428138. Its totient is φ = 1185428136.

The previous prime is 1185428129. The next prime is 1185428147. The reversal of 1185428137 is 7318245811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183635216 + 1792921 = 34404^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 1185428137 - 2³ = 1185428129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1185428137.

It is not a weakly prime, because it can be changed into another prime (1185428117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592714068 + 592714069.

It is an arithmetic number, because the mean of its divisors is an integer number (592714069).

Almost surely, 2^1185428137 is an apocalyptic number.

It is an amenable number.

1185428137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185428137 is an equidigital number, since it uses as much as digits as its factorization.

1185428137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 40.

The square root of 1185428137 is about 34430.0470083908. The cubic root of 1185428137 is about 1058.3396746570.

The spelling of 1185428137 in words is "one billion, one hundred eighty-five million, four hundred twenty-eight thousand, one hundred thirty-seven".