180135407 has 2 divisors, whose sum is σ = 180135408. Its totient is φ = 180135406.

The previous prime is 180135367. The next prime is 180135433. The reversal of 180135407 is 704531081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 180135407 - 2⁶ = 180135343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 180135407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180135497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90067703 + 90067704.

It is an arithmetic number, because the mean of its divisors is an integer number (90067704).

Almost surely, 2^180135407 is an apocalyptic number.

180135407 is a deficient number, since it is larger than the sum of its proper divisors (1).

180135407 is an equidigital number, since it uses as much as digits as its factorization.

180135407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 180135407 is about 13421.4532372616. The cubic root of 180135407 is about 564.7631628032.

Adding to 180135407 its reverse (704531081), we get a palindrome (884666488).

The spelling of 180135407 in words is "one hundred eighty million, one hundred thirty-five thousand, four hundred seven".