180018542 has 32 divisors (see below), whose sum is σ = 320358240. Its totient is φ = 74926080.

The previous prime is 180018541. The next prime is 180018547. The reversal of 180018542 is 245810081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180018541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7334 + ... + 20342.

It is an arithmetic number, because the mean of its divisors is an integer number (10011195).

Almost surely, 2^180018542 is an apocalyptic number.

180018542 is a deficient number, since it is larger than the sum of its proper divisors (140339698).

180018542 is a wasteful number, since it uses less digits than its factorization.

180018542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13076.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 180018542 is about 13417.0988667446. The cubic root of 180018542 is about 564.6410040963.

The spelling of 180018542 in words is "one hundred eighty million, eighteen thousand, five hundred forty-two".