2408461661 has 4 divisors (see below), whose sum is σ = 2408561472. Its totient is φ = 2408361852.

The previous prime is 2408461651. The next prime is 2408461667. The reversal of 2408461661 is 1661648042.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1661648042 = 2 ⋅830824021.

It is a cyclic number.

It is not a de Polignac number, because 2408461661 - 2²² = 2404267357 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 (2408461667) 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, 11366 + ... + 70328.

It is an arithmetic number, because the mean of its divisors is an integer number (602140368).

Almost surely, 2^2408461661 is an apocalyptic number.

It is an amenable number.

2408461661 is a deficient number, since it is larger than the sum of its proper divisors (99811).

2408461661 is an equidigital number, since it uses as much as digits as its factorization.

2408461661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99810.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 2408461661 is about 49076.0803345173. The cubic root of 2408461661 is about 1340.4375308819.

The spelling of 2408461661 in words is "two billion, four hundred eight million, four hundred sixty-one thousand, six hundred sixty-one".