180115453428 has 24 divisors (see below), whose sum is σ = 420279420288. Its totient is φ = 60037051776.

The previous prime is 180115453423. The next prime is 180115453457. The reversal of 180115453428 is 824354511081.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 180115453428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180115453423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426700 + ... + 736412.

It is an arithmetic number, because the mean of its divisors is an integer number (17511642512).

Almost surely, 2^180115453428 is an apocalyptic number.

It is an amenable number.

180115453428 is an abundant number, since it is smaller than the sum of its proper divisors (240163966860).

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

180115453428 is a wasteful number, since it uses less digits than its factorization.

180115453428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358183 (or 358181 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The spelling of 180115453428 in words is "one hundred eighty billion, one hundred fifteen million, four hundred fifty-three thousand, four hundred twenty-eight".