8180461 has 4 divisors (see below), whose sum is σ = 8196124. Its totient is φ = 8164800.

The previous prime is 8180437. The next prime is 8180477. The reversal of 8180461 is 1640818.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1640818 = 2 ⋅820409.

It can be written as a sum of positive squares in 2 ways, for example, as 2449225 + 5731236 = 1565^2 + 2394^2 .

It is a cyclic number.

It is not a de Polignac number, because 8180461 - 2⁵ = 8180429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8180261) 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, 7020 + ... + 8101.

It is an arithmetic number, because the mean of its divisors is an integer number (2049031).

It is a Poulet number, since it divides 2^8180460-1.

Almost surely, 2^8180461 is an apocalyptic number.

It is an amenable number.

8180461 is a deficient number, since it is larger than the sum of its proper divisors (15663).

8180461 is a wasteful number, since it uses less digits than its factorization.

8180461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15662.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 8180461 is about 2860.1505205146. The cubic root of 8180461 is about 201.4926735797.

The spelling of 8180461 in words is "eight million, one hundred eighty thousand, four hundred sixty-one".