180161029 has 8 divisors (see below), whose sum is σ = 185228568. Its totient is φ = 175104000.

The previous prime is 180160993. The next prime is 180161039. The reversal of 180161029 is 920161081.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10562500 + 169598529 = 3250^2 + 13023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 180161029 - 2⁷ = 180160901 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 180160988 and 180161006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180161039) 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, 43029 + ... + 47029.

It is an arithmetic number, because the mean of its divisors is an integer number (23153571).

Almost surely, 2^180161029 is an apocalyptic number.

It is an amenable number.

180161029 is a deficient number, since it is larger than the sum of its proper divisors (5067539).

180161029 is a wasteful number, since it uses less digits than its factorization.

180161029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5255.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 180161029 is about 13422.4077199286. The cubic root of 180161029 is about 564.7899383568.

The spelling of 180161029 in words is "one hundred eighty million, one hundred sixty-one thousand, twenty-nine".