180115453429 has 4 divisors (see below), whose sum is σ = 180690902476. Its totient is φ = 179540004384.

The previous prime is 180115453423. The next prime is 180115453457. The reversal of 180115453429 is 924354511081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77116179204 + 102999274225 = 277698^2 + 320935^2 .

It is a cyclic number.

It is not a de Polignac number, because 180115453429 - 2⁹ = 180115452917 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 287724054 + ... + 287724679.

It is an arithmetic number, because the mean of its divisors is an integer number (45172725619).

Almost surely, 2^180115453429 is an apocalyptic number.

It is an amenable number.

180115453429 is a deficient number, since it is larger than the sum of its proper divisors (575449047).

180115453429 is an equidigital number, since it uses as much as digits as its factorization.

180115453429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575449046.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 180115453429 in words is "one hundred eighty billion, one hundred fifteen million, four hundred fifty-three thousand, four hundred twenty-nine".