182445781961 has 4 divisors (see below), whose sum is σ = 186895679124. Its totient is φ = 177995884800.

The previous prime is 182445781937. The next prime is 182445782011. The reversal of 182445781961 is 169187544281.

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

It can be written as a sum of positive squares in 2 ways, for example, as 82380480400 + 100065301561 = 287020^2 + 316331^2 .

It is a cyclic number.

It is not a de Polignac number, because 182445781961 - 2⁶ = 182445781897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 182445781897 and 182445781906.

It is not an unprimeable number, because it can be changed into a prime (182445781061) 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, 2224948520 + ... + 2224948601.

It is an arithmetic number, because the mean of its divisors is an integer number (46723919781).

Almost surely, 2^182445781961 is an apocalyptic number.

It is an amenable number.

182445781961 is a deficient number, since it is larger than the sum of its proper divisors (4449897163).

182445781961 is an equidigital number, since it uses as much as digits as its factorization.

182445781961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4449897162.

The product of its digits is 3870720, while the sum is 56.

The spelling of 182445781961 in words is "one hundred eighty-two billion, four hundred forty-five million, seven hundred eighty-one thousand, nine hundred sixty-one".