180140249 has 2 divisors, whose sum is σ = 180140250. Its totient is φ = 180140248.

The previous prime is 180140243. The next prime is 180140263. The reversal of 180140249 is 942041081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179694025 + 446224 = 13405^2 + 668^2 .

It is a cyclic number.

It is not a de Polignac number, because 180140249 - 2¹² = 180136153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (180140243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90070124 + 90070125.

It is an arithmetic number, because the mean of its divisors is an integer number (90070125).

Almost surely, 2^180140249 is an apocalyptic number.

It is an amenable number.

180140249 is a deficient number, since it is larger than the sum of its proper divisors (1).

180140249 is an equidigital number, since it uses as much as digits as its factorization.

180140249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 180140249 is about 13421.6336189005. The cubic root of 180140249 is about 564.7682229943.

The spelling of 180140249 in words is "one hundred eighty million, one hundred forty thousand, two hundred forty-nine".