180738157 has 2 divisors, whose sum is σ = 180738158. Its totient is φ = 180738156.

The previous prime is 180738139. The next prime is 180738193. The reversal of 180738157 is 751837081.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102839881 + 77898276 = 10141^2 + 8826^2 .

It is a cyclic number.

It is not a de Polignac number, because 180738157 - 2¹⁵ = 180705389 is a prime.

It is a super-3 number, since 3×180738157³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180738197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90369078 + 90369079.

It is an arithmetic number, because the mean of its divisors is an integer number (90369079).

Almost surely, 2^180738157 is an apocalyptic number.

It is an amenable number.

180738157 is a deficient number, since it is larger than the sum of its proper divisors (1).

180738157 is an equidigital number, since it uses as much as digits as its factorization.

180738157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 180738157 is about 13443.8892066247. The cubic root of 180738157 is about 565.3923783914.

The spelling of 180738157 in words is "one hundred eighty million, seven hundred thirty-eight thousand, one hundred fifty-seven".