180135412 has 12 divisors (see below), whose sum is σ = 316465380. Its totient is φ = 89716736.

The previous prime is 180135407. The next prime is 180135433. The reversal of 180135412 is 214531081.

It can be written as a sum of positive squares in 2 ways, for example, as 133541136 + 46594276 = 11556^2 + 6826^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86587 + ... + 88642.

It is an arithmetic number, because the mean of its divisors is an integer number (26372115).

Almost surely, 2^180135412 is an apocalyptic number.

It is an amenable number.

180135412 is a deficient number, since it is larger than the sum of its proper divisors (136329968).

180135412 is a wasteful number, since it uses less digits than its factorization.

180135412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175490 (or 175488 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 180135412 is about 13421.4534235306. The cubic root of 180135412 is about 564.7631680286.

Adding to 180135412 its reverse (214531081), we get a palindrome (394666493).

The spelling of 180135412 in words is "one hundred eighty million, one hundred thirty-five thousand, four hundred twelve".