180542464 has 44 divisors (see below), whose sum is σ = 363530824. Its totient is φ = 89616384.

The previous prime is 180542441. The next prime is 180542489. The reversal of 180542464 is 464245081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160207 + ... + 161329.

Almost surely, 2^180542464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180542464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181765412).

180542464 is an abundant number, since it is smaller than the sum of its proper divisors (182988360).

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

180542464 is a wasteful number, since it uses less digits than its factorization.

180542464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1282 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 180542464 is about 13436.6090960480. The cubic root of 180542464 is about 565.1882464595.

The spelling of 180542464 in words is "one hundred eighty million, five hundred forty-two thousand, four hundred sixty-four".