180135700 has 18 divisors (see below), whose sum is σ = 390894686. Its totient is φ = 72054240.

The previous prime is 180135679. The next prime is 180135737. The reversal of 180135700 is 7531081.

180135700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 6370576 + 173765124 = 2524^2 + 13182^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 900579 + ... + 900778.

Almost surely, 2^180135700 is an apocalyptic number.

180135700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

180135700 is an abundant number, since it is smaller than the sum of its proper divisors (210758986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

180135700 is a wasteful number, since it uses less digits than its factorization.

180135700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801371 (or 1801364 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 180135700 is about 13421.4641526176. The cubic root of 180135700 is about 564.7634690090.

Adding to 180135700 its reverse (7531081), we get a palindrome (187666781).

The spelling of 180135700 in words is "one hundred eighty million, one hundred thirty-five thousand, seven hundred".