180122494 has 4 divisors (see below), whose sum is σ = 270183744. Its totient is φ = 90061246.

The previous prime is 180122483. The next prime is 180122507. The reversal of 180122494 is 494221081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494221081 = 1213 ⋅407437.

It is a super-2 number, since 2×180122494² = 64888225689560072, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45030622 + ... + 45030625.

It is an arithmetic number, because the mean of its divisors is an integer number (67545936).

Almost surely, 2^180122494 is an apocalyptic number.

180122494 is a deficient number, since it is larger than the sum of its proper divisors (90061250).

180122494 is an equidigital number, since it uses as much as digits as its factorization.

180122494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90061249.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 180122494 is about 13420.9721704502. The cubic root of 180122494 is about 564.7496674719.

The spelling of 180122494 in words is "one hundred eighty million, one hundred twenty-two thousand, four hundred ninety-four".