181300022 has 4 divisors (see below), whose sum is σ = 271950036. Its totient is φ = 90650010.

The previous prime is 181300013. The next prime is 181300039. The reversal of 181300022 is 220003181.

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

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, 45325004 + ... + 45325007.

It is an arithmetic number, because the mean of its divisors is an integer number (67987509).

Almost surely, 2^181300022 is an apocalyptic number.

181300022 is a deficient number, since it is larger than the sum of its proper divisors (90650014).

181300022 is an equidigital number, since it uses as much as digits as its factorization.

181300022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90650013.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 181300022 is about 13464.7696601167. The cubic root of 181300022 is about 565.9776552255.

The spelling of 181300022 in words is "one hundred eighty-one million, three hundred thousand, twenty-two".