180820034 has 4 divisors (see below), whose sum is σ = 271230054. Its totient is φ = 90410016.

The previous prime is 180820033. The next prime is 180820039. The reversal of 180820034 is 430028081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 430028081 = 7 ⋅61432583.

It can be written as a sum of positive squares in only one way, i.e., 103327225 + 77492809 = 10165^2 + 8803^2 .

It is a super-2 number, since 2×180820034² = 65391769391522312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 180819985 and 180820012.

It is not an unprimeable number, because it can be changed into a prime (180820033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45205007 + ... + 45205010.

Almost surely, 2^180820034 is an apocalyptic number.

180820034 is a deficient number, since it is larger than the sum of its proper divisors (90410020).

180820034 is an equidigital number, since it uses as much as digits as its factorization.

180820034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90410019.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 180820034 is about 13446.9339999868. The cubic root of 180820034 is about 565.4777424781.

The spelling of 180820034 in words is "one hundred eighty million, eight hundred twenty thousand, thirty-four".