18299043461 has 4 divisors (see below), whose sum is σ = 18609196800. Its totient is φ = 17988890124.

The previous prime is 18299043439. The next prime is 18299043467. The reversal of 18299043461 is 16434099281.

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: 16434099281 = 95881 ⋅171401.

It is a cyclic number.

It is not a de Polignac number, because 18299043461 - 2⁶ = 18299043397 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 (18299043467) 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, 155076581 + ... + 155076698.

It is an arithmetic number, because the mean of its divisors is an integer number (4652299200).

Almost surely, 2^18299043461 is an apocalyptic number.

It is an amenable number.

18299043461 is a deficient number, since it is larger than the sum of its proper divisors (310153339).

18299043461 is an equidigital number, since it uses as much as digits as its factorization.

18299043461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310153338.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 18299043461 in words is "eighteen billion, two hundred ninety-nine million, forty-three thousand, four hundred sixty-one".