180749137 has 2 divisors, whose sum is σ = 180749138. Its totient is φ = 180749136.

The previous prime is 180749131. The next prime is 180749143. The reversal of 180749137 is 731947081.

It is a balanced prime because it is at equal distance from previous prime (180749131) and next prime (180749143).

It can be written as a sum of positive squares in only one way, i.e., 129254161 + 51494976 = 11369^2 + 7176^2 .

It is a cyclic number.

It is not a de Polignac number, because 180749137 - 2¹¹ = 180747089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180749137.

It is not a weakly prime, because it can be changed into another prime (180749131) 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, 90374568 + 90374569.

It is an arithmetic number, because the mean of its divisors is an integer number (90374569).

Almost surely, 2^180749137 is an apocalyptic number.

It is an amenable number.

180749137 is a deficient number, since it is larger than the sum of its proper divisors (1).

180749137 is an equidigital number, since it uses as much as digits as its factorization.

180749137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 180749137 is about 13444.2975643951. The cubic root of 180749137 is about 565.4038275189.

The spelling of 180749137 in words is "one hundred eighty million, seven hundred forty-nine thousand, one hundred thirty-seven".