18463331477 has 8 divisors (see below), whose sum is σ = 18727434264. Its totient is φ = 18199531008.

The previous prime is 18463331461. The next prime is 18463331531. The reversal of 18463331477 is 77413336481.

It can be written as a sum of positive squares in 4 ways, for example, as 6308489476 + 12154842001 = 79426^2 + 110249^2 .

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 18463331477 - 2⁴ = 18463331461 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 (18463331077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48893 + ... + 198285.

It is an arithmetic number, because the mean of its divisors is an integer number (2340929283).

Almost surely, 2^18463331477 is an apocalyptic number.

It is an amenable number.

18463331477 is a deficient number, since it is larger than the sum of its proper divisors (264102787).

18463331477 is a wasteful number, since it uses less digits than its factorization.

18463331477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151159.

The product of its digits is 1016064, while the sum is 47.

The spelling of 18463331477 in words is "eighteen billion, four hundred sixty-three million, three hundred thirty-one thousand, four hundred seventy-seven".