182166481 has 4 divisors (see below), whose sum is σ = 208190272. Its totient is φ = 156142692.

The previous prime is 182166469. The next prime is 182166493. The reversal of 182166481 is 184661281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184661281 = 7 ⋅26380183.

It is an interprime number because it is at equal distance from previous prime (182166469) and next prime (182166493).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-182166481 is a prime.

It is a super-2 number, since 2×182166481² = 66369253599846722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 182166481.

It is not an unprimeable number, because it can be changed into a prime (182166421) 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, 13011885 + ... + 13011898.

It is an arithmetic number, because the mean of its divisors is an integer number (52047568).

Almost surely, 2^182166481 is an apocalyptic number.

It is an amenable number.

182166481 is a deficient number, since it is larger than the sum of its proper divisors (26023791).

182166481 is an equidigital number, since it uses as much as digits as its factorization.

182166481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26023790.

The product of its digits is 18432, while the sum is 37.

The square root of 182166481 is about 13496.9063492343. The cubic root of 182166481 is about 566.8778523504.

The spelling of 182166481 in words is "one hundred eighty-two million, one hundred sixty-six thousand, four hundred eighty-one".