180973816 has 8 divisors (see below), whose sum is σ = 339325920. Its totient is φ = 90486904.

The previous prime is 180973811. The next prime is 180973831. The reversal of 180973816 is 618379081.

180973816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180973811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11310856 + ... + 11310871.

It is an arithmetic number, because the mean of its divisors is an integer number (42415740).

Almost surely, 2^180973816 is an apocalyptic number.

It is an amenable number.

180973816 is a deficient number, since it is larger than the sum of its proper divisors (158352104).

180973816 is a wasteful number, since it uses less digits than its factorization.

180973816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22621733 (or 22621729 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 180973816 is about 13452.6508911813. The cubic root of 180973816 is about 565.6380043244.

It can be divided in two parts, 1809 and 73816, that added together give a square (75625 = 275²).

The spelling of 180973816 in words is "one hundred eighty million, nine hundred seventy-three thousand, eight hundred sixteen".