180664942 has 24 divisors (see below), whose sum is σ = 282814560. Its totient is φ = 86492640.

The previous prime is 180664937. The next prime is 180664943. The reversal of 180664942 is 249466081.

It is a junction number, because it is equal to n+sod(n) for n = 180664895 and 180664904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180664943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1081743 + ... + 1081909.

It is an arithmetic number, because the mean of its divisors is an integer number (11783940).

Almost surely, 2^180664942 is an apocalyptic number.

180664942 is a deficient number, since it is larger than the sum of its proper divisors (102149618).

180664942 is an equidigital number, since it uses as much as digits as its factorization.

180664942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 180664942 is about 13441.1659464497. The cubic root of 180664942 is about 565.3160233769.

The spelling of 180664942 in words is "one hundred eighty million, six hundred sixty-four thousand, nine hundred forty-two".