18394048361 has 8 divisors (see below), whose sum is σ = 19941923400. Its totient is φ = 16865165952.

The previous prime is 18394048339. The next prime is 18394048411. The reversal of 18394048361 is 16384049381.

It can be written as a sum of positive squares in 4 ways, for example, as 1793014336 + 16601034025 = 42344^2 + 128845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18394048361 - 2¹⁰ = 18394047337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18394048061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4746140 + ... + 4750013.

It is an arithmetic number, because the mean of its divisors is an integer number (2492740425).

Almost surely, 2^18394048361 is an apocalyptic number.

It is an amenable number.

18394048361 is a deficient number, since it is larger than the sum of its proper divisors (1547875039).

18394048361 is a wasteful number, since it uses less digits than its factorization.

18394048361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9496315.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 18394048361 in words is "eighteen billion, three hundred ninety-four million, forty-eight thousand, three hundred sixty-one".