180442764 has 18 divisors (see below), whose sum is σ = 456119300. Its totient is φ = 60147576.

The previous prime is 180442739. The next prime is 180442789. The reversal of 180442764 is 467244081.

It is an interprime number because it is at equal distance from previous prime (180442739) and next prime (180442789).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5012299 = 180442764 / (1 + 8 + 0 + 4 + 4 + 2 + 7 + 6 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2506114 + ... + 2506185.

Almost surely, 2^180442764 is an apocalyptic number.

It is an amenable number.

180442764 is an abundant number, since it is smaller than the sum of its proper divisors (275676536).

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

180442764 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 9 representation: 180442764 = (416472840)₉.

180442764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5012309 (or 5012304 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 180442764 is about 13432.8985703012. The cubic root of 180442764 is about 565.0841903414.

The spelling of 180442764 in words is "one hundred eighty million, four hundred forty-two thousand, seven hundred sixty-four".