18568470649 has 8 divisors (see below), whose sum is σ = 18688057920. Its totient is φ = 18448983696.

The previous prime is 18568470647. The next prime is 18568470671. The reversal of 18568470649 is 94607486581.

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 18568470649 - 2¹ = 18568470647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18568470593 and 18568470602.

It is not an unprimeable number, because it can be changed into a prime (18568470647) 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, 365782 + ... + 413440.

It is an arithmetic number, because the mean of its divisors is an integer number (2336007240).

Almost surely, 2^18568470649 is an apocalyptic number.

It is an amenable number.

18568470649 is a deficient number, since it is larger than the sum of its proper divisors (119587271).

18568470649 is a wasteful number, since it uses less digits than its factorization.

18568470649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50159.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 18568470649 in words is "eighteen billion, five hundred sixty-eight million, four hundred seventy thousand, six hundred forty-nine".