180497394 has 72 divisors (see below), whose sum is σ = 491312640. Its totient is φ = 46878480.

The previous prime is 180497389. The next prime is 180497467. The reversal of 180497394 is 493794081.

180497394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9327 + ... + 21165.

Almost surely, 2^180497394 is an apocalyptic number.

180497394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 180497394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245656320).

180497394 is an abundant number, since it is smaller than the sum of its proper divisors (310815246).

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

180497394 is a wasteful number, since it uses less digits than its factorization.

180497394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11876 (or 11862 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 180497394 is about 13434.9318569169. The cubic root of 180497394 is about 565.1412119952.

The spelling of 180497394 in words is "one hundred eighty million, four hundred ninety-seven thousand, three hundred ninety-four".