180986542 has 16 divisors (see below), whose sum is σ = 297820800. Its totient is φ = 81805240.

The previous prime is 180986513. The next prime is 180986549. The reversal of 180986542 is 245689081.

It is a happy number.

180986542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×180986542² = 65512256770235528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180986549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19042 + ... + 26917.

It is an arithmetic number, because the mean of its divisors is an integer number (18613800).

Almost surely, 2^180986542 is an apocalyptic number.

180986542 is a deficient number, since it is larger than the sum of its proper divisors (116834258).

180986542 is a wasteful number, since it uses less digits than its factorization.

180986542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46151.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 180986542 is about 13453.1238751451. The cubic root of 180986542 is about 565.6512624864.

The spelling of 180986542 in words is "one hundred eighty million, nine hundred eighty-six thousand, five hundred forty-two".